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Journal articles on the topic 'Upper Rim'

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1

Lhoták, Pavel. "Upper rim-bridged calixarenes." RSC Advances 14, no. 32 (2024): 23303–21. http://dx.doi.org/10.1039/d4ra04663c.

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This review deals with basic synthetic strategies leading to bridging the upper rim of calixarenes, giving rise to unusual rigidified structures with possible applications in supramolecular chemistry.
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2

Sharma, Shiv Kumar, and C. David Gutsche. "Upper Rim Substitution of Calix[4]arenes via Their Upper Rim A,C Dinitro Compounds1." Journal of Organic Chemistry 64, no. 3 (1999): 998–1003. http://dx.doi.org/10.1021/jo980903z.

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3

Vreekamp, Remko H., Willem Verboom, and David N. Reinhoudt. "Lower Rim−Upper Rim Hydrogen-Bonded Adducts of Calix[4]arenes." Journal of Organic Chemistry 61, no. 13 (1996): 4282–88. http://dx.doi.org/10.1021/jo9603082.

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4

Parulekar, Sumedh, Kirankirti Muppalla, Ali Husain, and Kirpal S. Bisht. "Multifold ring closing metathesis reactions in the formation of resorcin[4]arene cavitands." RSC Advances 5, no. 32 (2015): 25477–84. http://dx.doi.org/10.1039/c5ra00760g.

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The formation of the resorcin[4]arene cavitands by the ring closing metathesis (RCM) reaction depends, to a large extent, on the conformation and the substituents on the upper and lower rim of the perallylated resorcin[4]arenes.
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5

Kasyan, Oleg, Dariusz Swierczynski, Andrew Drapailo, Kinga Suwinska, Janusz Lipkowski, and Vitaly Kalchenko. "Upper rim substituted thiacalix[4]arenes." Tetrahedron Letters 44, no. 38 (2003): 7167–70. http://dx.doi.org/10.1016/s0040-4039(03)01809-4.

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6

Sharma, Shiv Kumar, and C. David Gutsche. "Selective Lower Rim Reactions of 5,17-Upper Rim-Disubstituted Calix[4]arenes1." Journal of Organic Chemistry 61, no. 7 (1996): 2564–68. http://dx.doi.org/10.1021/jo952013e.

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7

Sharma, Shiv Kumar, Suseela Kanamathareddy, and C. David Gutsche. "Upper Rim Substitution of Calixarenes: Carboxylic Acids." Synthesis 1997, no. 11 (1997): 1268–72. http://dx.doi.org/10.1055/s-1997-1359.

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8

Lhoták, Pavel, Michal Himl, Ivan Stibor, Jan Sykora, and Ivana Cisarová. "Upper rim substitution of thiacalix[4]arene." Tetrahedron Letters 42, no. 40 (2001): 7107–10. http://dx.doi.org/10.1016/s0040-4039(01)01461-7.

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9

Düker, Matthias H., Rafael Gómez, Christophe M. L. Vande Velde, and Vladimir A. Azov. "Upper rim tetrathiafulvalene-bridged calix[4]arenes." Tetrahedron Letters 52, no. 22 (2011): 2881–84. http://dx.doi.org/10.1016/j.tetlet.2011.03.140.

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10

Hudecek, Oldrich, Petra Curinova, Jan Budka, and Pavel Lhoták. "Regioselective upper rim substitution of calix[4]arenes." Tetrahedron 67, no. 29 (2011): 5213–18. http://dx.doi.org/10.1016/j.tet.2011.05.049.

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11

Kuhnert, Nikolai, and Adam Le-Gresley. "Synthesis of upper rim calix[4]arene carcerands." Tetrahedron Letters 49, no. 7 (2008): 1274–76. http://dx.doi.org/10.1016/j.tetlet.2007.11.115.

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12

Husaru, Laura, Margit Gruner, Thomas Wolff, Wolf D. Habicher, and Reiner Salzer. "Photoresponsive upper-rim azobenzene substituted calix[4]resorcinarenes." Tetrahedron Letters 46, no. 19 (2005): 3377–79. http://dx.doi.org/10.1016/j.tetlet.2005.03.096.

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13

Goh, Ching Yong, Laura Baldini, Alessandro Casnati, et al. "Upper-rim acidic peptidocalixarenes as crystal growth modifiers." Supramolecular Chemistry 26, no. 7-8 (2014): 488–99. http://dx.doi.org/10.1080/10610278.2014.891738.

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14

Bew, Sean P., Rebecca A. Brimage, Nathalie L'Hermit, and Sunil V. Sharma. "Upper Rim Appended Hybrid Calixarenes via Click Chemistry." Organic Letters 9, no. 19 (2007): 3713–16. http://dx.doi.org/10.1021/ol071047t.

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15

Baldini, Laura, Roberta Cacciapaglia, Alessandro Casnati, et al. "Upper Rim Guanidinocalix[4]arenes as Artificial Phosphodiesterases." Journal of Organic Chemistry 77, no. 7 (2012): 3381–89. http://dx.doi.org/10.1021/jo300193y.

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16

Bohmer, Volker, and W. Vogt. "Calix[4]arenes, bridged at the upper rim." Pure and Applied Chemistry 65, no. 3 (1993): 403–8. http://dx.doi.org/10.1351/pac199365030403.

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17

Matvieiev, Yuriy, Andrew Solovyov, Svetlana Shishkina, et al. "Upper-rim calixarene phosphines consisting of multiple lower-rim OH functional groups: synthesis and characterisation." Supramolecular Chemistry 26, no. 10-12 (2014): 825–35. http://dx.doi.org/10.1080/10610278.2014.882511.

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18

Wang, Zhang Feng, Chi Xiang Ou, Meng Jun Wang, Bai Chen Chen, and Gang Xian Fan. "Mechanical Properties and Microstructure of A356-T6 Aluminum Alloy Wheel Hub Based on Casting-Spinning Process." Materials Science Forum 1036 (June 29, 2021): 3–10. http://dx.doi.org/10.4028/www.scientific.net/msf.1036.3.

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The mechanical properties and microstructure of the A356-T6 wheel hub based on low pressure die casting-hot flow forming process were analyzed by means of optical microscopy (OM), scanning electron microscopy (SEM) and tensile tests. Results showed that the size of the eutectic region and the morphology of the Si phase were the main factors affecting the mechanical properties and fracture morphology of the wheel hub. There was a uniform distribution of eutectic area and fine Si phase morphology in the microstructure of the upper rim and lower rim, moreover, the ultimate tensile strength and yi
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19

Hira Riaz, Nadia M Athar, Asif ullah Khan, Salva Zaki, Hina Rehman, and Amira Qadeer. "MEAN VERTICAL LENGTH OF LABIAL SURFACE DISPLAY OF WAX RIM WITH RESTING LIP AND DURING POSED SMILE IN EDENTULOUS PATIENTS WITH DIFFERENT LENGTHS OF MAXILLARY LIP IN RELATION TO GENDER." Journal of Khyber College of Dentistry 10, no. 04 (2020): 40–43. http://dx.doi.org/10.33279/jkcd.v10i04.190.

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Objective:
 To determine mean vertical length of labial surface display of wax rim with resting lip and during posed smile.
 Materials and Methods:
 Subjects fulfilling the inclusion and exclusion criteria were invited to take part in the study. The purpose, procedures, risk and benefits of the study were explained to them. The mentioned measurement for the vertical display of the labial surface of the occlusal rim was performed by predefined technique. All measurements were repeated 3 times and mean value deduced for entry in the data collection proforma. Data was analyzed usin
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20

Li, Zheng-Yi, Hong-Xiao Tong, Yuan Chen, et al. "Asymmetric Michael addition reactions catalyzed by calix[4]thiourea cyclohexanediamine derivatives." Beilstein Journal of Organic Chemistry 14 (July 25, 2018): 1901–7. http://dx.doi.org/10.3762/bjoc.14.164.

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A number of upper rim-functionalized calix[4]thiourea cyclohexanediamine derivatives have been designed, synthesized and used as catalysts for enantioselective Michael addition reactions between nitroolefins and acetylacetone. The optimal catalyst 2 with a mono-thiourea group exhibited good performance in the presence of water/toluene (v/v = 1:2). Under the optimal reaction conditions, high yields of up to 99% and moderate to good enantioselectivities up to 94% ee were achieved. Detailed experiments clearly showed that the upper rim-functionalized hydrophobic calixarene scaffold played an impo
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21

Abd-El-Aziz, Alaa S., Patrick O. Shipman, Jessica L. Pilfold, and Paul R. Shipley. "Synthesis of Upper Rim Functionalized Calixarene-Based Poly(norbornenes)." Macromolecular Chemistry and Physics 211, no. 9 (2010): 996–1002. http://dx.doi.org/10.1002/macp.200900588.

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22

Sharma, Vinay S., Akshara P. Shah, and Anuj S. Sharma. "A new class of supramolecular liquid crystals derived from azo calix[4]arene functionalized 1,3,4-thiadiazole derivatives." New Journal of Chemistry 43, no. 8 (2019): 3556–64. http://dx.doi.org/10.1039/c8nj04997a.

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A new class of bowl-shaped supramolecular liquid crystals (LCs) is described derived from calix[4]arene substituted with 1,3,4-thiadiazole derivatives, inbuilt with Schiff base and ester on the lower rim and with an azo group on the upper rim with an alkyl side chain (–OC<sub>3</sub>H<sub>7</sub>, –OC<sub>8</sub>H<sub>17</sub>).
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23

Havlíček, Jaroslav, Marcela Tkadlecová, Michaela Vyhnánková, Evgueni Pinkhassik, and Ivan Stibor. "NMR Complexation Study of Several Oxyethylated Calix[4]arenes with Lithium, Sodium and Potassium Ions." Collection of Czechoslovak Chemical Communications 61, no. 12 (1996): 1783–97. http://dx.doi.org/10.1135/cccc19961783.

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The influence of calix[4]arene upper rim substitution on the complexation with Li+, Na+, K+ was studied by 1H NMR spectroscopy. Calix[4]arenes 1-4 namely 25,26,27,28-tetrakis(3-oxapentyloxy)calix[4]arene (1), its 5,17-diamino (2) and 5,17-dinitro derivative (3) as well as 25,26,27,28-tetrakis(3,6,9-trioxadecyloxy)calix[4]arene (4) having four monoalkyloligoethylene glycol chains on the lower rim have been studied. No complexation has been observed for Li+. Two electron-donating NH2 groups on the calixarene upper rim (compound 2) improve the complexation ability for Na+ and K+ compared with par
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24

Gagnon, Jonathan, Martin Vézina, Marc Drouin, and Pierre D. Harvey. "Regioselective upper-rim functionalizations of calix[4]arene by diphenylphosphino groups." Canadian Journal of Chemistry 79, no. 10 (2001): 1439–46. http://dx.doi.org/10.1139/v01-161.

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The regioselective upper-rim functionalization of calix[4]arene have been performed to prepare all the multisubstituted diphenylphosphine derivatives. In addition, the X-ray structures of 5,17-dibromo-11,23-bis(diphenylphosphino)-25,26,27,28-tetra-n-propoxycalix[4]arene and 5,11,17,23-tetrakis(diphenylphosphino)-25,26,27,28-tetra-i-propoxy-calix[4]arene have been determined. Regioselective functionalizations have been achieved using methods that involve appropriate choices of bases, alkyllithium-solvent systems, stoichiometry, and reaction times. A new and convenient method for selectively pre
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25

Kennedy, Stuart R., Mawgan U. Main, Colin R. Pulham, Irene Ling, and Scott J. Dalgarno. "A self-assembled nanotube supported by halogen bonding interactions." CrystEngComm 21, no. 5 (2019): 786–90. http://dx.doi.org/10.1039/c8ce01824c.

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26

Oh, Kangwon. "A Study on the Rim Perforation Decorated Pottery from Northeastern China Region from Neolithic Age to the Early Iron age." Yeongnam Archaeological Society, no. 84 (May 30, 2019): 59–97. http://dx.doi.org/10.47417/yar.2019.84.59.

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The rim perforation decorated potteries in northeastern China are classified as followings. Type Ala, which pushes the decoration tool from an internal substrate to external substrate, forms raised decoration on the outside of the substrate. Type Alb, which is similar in the way of Ala, forms two to three rows of raised decorations on the outside of the substrate. Type All, which seals the inside of the substrate with clay after the formation of two to three rows of raised decorations. By contrast, type Ba, which forms the raised decoration on the internal substrate by pushing the decoration t
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27

Gonsalvi, Luca, Antonella Guerriero, Frédéric Hapiot, et al. "Lower- and upper-rim-modified derivatives of 1,3,5-triaza-7-phosphaadamantane: Coordination chemistry and applications in catalytic reactions in water." Pure and Applied Chemistry 85, no. 2 (2012): 385–96. http://dx.doi.org/10.1351/pac-con-12-07-10.

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In this article, a brief review of the recent functionalizations of the cage-like water-soluble phosphine 1,3,5-triaza-7-phosphaadamantane (PTA), involving N-quaternization (lower rim) and introduction of a side arm in C-6 position (upper rim) will be presented, highlighting selected examples in their use as ligands for ruthenium(II), iridium(I), and rhodium(I) moieties together with applications of the related complexes in homogeneous catalysis.
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28

Tlustý, M., V. Eigner, M. Babor, M. Kohout, and P. Lhoták. "Synthesis of upper rim-double-bridged calix[4]arenes bearing seven membered rings and related compounds." RSC Advances 9, no. 38 (2019): 22017–30. http://dx.doi.org/10.1039/c9ra05075b.

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29

Slavík, P., H. Dvořáková, M. Krupička, and P. Lhoták. "Unexpected cleavage of upper rim-bridged calix[4]arenes leading to linear oligophenolic derivatives." Organic & Biomolecular Chemistry 16, no. 5 (2018): 838–43. http://dx.doi.org/10.1039/c7ob03101g.

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30

Boonkitpatarakul, Kanokthorn, Yamonporn Yodta, Nakorn Niamnont, and Mongkol Sukwattanasinitt. "Fluorescent phenylethynylene calix[4]arenes for sensing TNT in aqueous media and vapor phase." RSC Advances 5, no. 42 (2015): 33306–11. http://dx.doi.org/10.1039/c5ra02758f.

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31

Mitchell, Gary C. "The Permian-Triassic Stratigraphy of the Northwest Paradox Basin Area, Emery, Garfield, and Wayne Counties, Utah." Mountain Geologist 22, no. 4 (1985): 149–66. http://dx.doi.org/10.31582/rmag.mg.22.4.149.

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The Upper Permian and Lower Triassic rocks in the northwestern Paradox basin are closely related even though they are separated by a significant unconformity. Careful analysis of surface and subsurface data provides a framework to relate underlying units to deposition of suprajacent units. The Black Dragon Member of the Triassic Moenkopi Formation infilled the topography on the underlying Permian units. The thickness of the Black Dragon Member is inversely related to the thickness of the underlying White Rim Sandstone. The upper portion of the Black Dragon Member was deposited primarily in coa
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32

Berrocal, José Augusto, Matthew B. Baker, Laura Baldini, Alessandro Casnati, and Stefano Di Stefano. "Inherently chiral cone-calix[4]arenes via a subsequent upper rim ring-closing/opening methodology." Organic & Biomolecular Chemistry 16, no. 39 (2018): 7255–64. http://dx.doi.org/10.1039/c8ob01813h.

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33

Podyachev, Sergey N., Svetlana N. Sudakova, Rinas N. Nagimov, et al. "A simple synthetic approach to enhance the thermal luminescence sensitivity of Tb3+ complexes with thiacalix[4]arene derivatives through upper-rim bromination." Dalton Transactions 49, no. 24 (2020): 8298–313. http://dx.doi.org/10.1039/d0dt00709a.

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34

Valluru, Gopikishore, Shofiur Rahman, Paris E. Georghiou, Louise N. Dawe, Abdullah N. Alodhayb, and Luc Y. Beaulieu. "Synthesis of a cone-conformer bimodal calix[4]arene-crown-5 which forms a sensitive cesium ion sensing layer on gold-coated microcantilevers." New J. Chem. 38, no. 12 (2014): 5868–72. http://dx.doi.org/10.1039/c4nj01213e.

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35

Tlustý, Martin, Dita Spálovská, Michal Kohout, Václav Eigner, and Pavel Lhoták. "Ketone transformation as a pathway to inherently chiral rigidified calix[4]arenes." Chemical Communications 56, no. 84 (2020): 12773–76. http://dx.doi.org/10.1039/d0cc05352j.

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36

Kanamathareddy, Suseela, and C. David Gutsche. "Selective Upper Rim Functionalization and Lower Rim Bridge Building with Calix[4]arenes and Calix[6]arenes1." Journal of Organic Chemistry 61, no. 7 (1996): 2511–16. http://dx.doi.org/10.1021/jo952054a.

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37

Cunningham, Kutcher K., Andrew W. Ezell, Keith L. Belli, John D. Hodges, and Emily B. Schultz. "A Decisionmaking Model for Managing or Regenerating Southern Upland Hardwood Forests." Southern Journal of Applied Forestry 35, no. 4 (2011): 184–92. http://dx.doi.org/10.1093/sjaf/35.4.184.

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Abstract A decisionmaking model was developed to assist hardwood resource managers in determining the management potential, for sawlog production, of southern upland hardwood stands within the Cumberland Plateau, Western Highland Rim, and Upper Coastal Plain physiographic provinces. The model determines stands to be either manageable (using intermediate stand management) or in need of regeneration. Stand index values were established for even-aged stands using stocking guidelines, individual tree characteristics, and tree class. Threshold index values for continued stand management were establ
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38

Yoneda, Hidemasa, Katsuyuki Iwatsuki, Masaomi Saeki, Michiro Yamamoto, and Masahiro Tatebe. "Do Anatomical Differences of the Volar Rim of the Distal Radius Affect Implant Design? A Three-Dimensional Analysis of Its Anatomy and Need for Personalized Medicine." Anatomia 1, no. 2 (2022): 177–85. http://dx.doi.org/10.3390/anatomia1020018.

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The distal radius, one of the frequent sites of upper extremity fractures, includes unique anatomy referred to as the volar rim. Few studies have addressed its interindividual differences. Additionally, implants for osteosynthesis must match the anatomical structures to prevent soft tissue invasion, but no implants have focused on that so far. In this study, three-dimensional surface models were created from CT images of 101 cases. Analysis of the distal radius, including the volar rim anatomy, was performed to design plates to minimize the discrepancy between the bone anatomy and the implant.
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39

Sharma, Shiv Kumar, and C. David Gutsche. "Synthesis of calix[4]arenes carrying bulky upper-rim groups." Tetrahedron Letters 34, no. 34 (1993): 5389–92. http://dx.doi.org/10.1016/s0040-4039(00)73916-5.

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40

de Mendoza, Javier, Mar Carramolino, Felix Cuevas, et al. "Selective Functionalization of Calix[6]arenes at the Upper Rim." Synthesis 1994, no. 01 (1994): 47–50. http://dx.doi.org/10.1055/s-1994-25403.

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41

Van Loon, Jan Dirk, Arturo Arduini, Laura Coppi, et al. "Selective functionalization of calix[4]arenes at the upper rim." Journal of Organic Chemistry 55, no. 21 (1990): 5639–46. http://dx.doi.org/10.1021/jo00308a024.

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42

van Loon, J. D., A. Arduini, W. Verboom, et al. "Selective functionalization of calix[4]arenes at the upper rim." Tetrahedron Letters 30, no. 20 (1989): 2681–84. http://dx.doi.org/10.1016/s0040-4039(00)99097-x.

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43

Arduini, Arturo, Riccardo Ferdani, Andrea Pochini, and Andrea Secchi. "Synthesis of Upper Rim Covalently Linked Double Calix[6]arenes." Tetrahedron 56, no. 43 (2000): 8573–77. http://dx.doi.org/10.1016/s0040-4020(00)00805-x.

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44

Marson, I., G. F. Panza, and P. Suhadolc. "Crust and upper mantle models along the active Tyrrhenian rim." Terra Nova 7, no. 3 (1995): 348–57. http://dx.doi.org/10.1111/j.1365-3121.1995.tb00804.x.

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45

Shokova, E. A., A. N. Khomich, and V. V. Kovalev. "ChemInform Abstract: Selective Upper-Rim Adamantylation of Calix[4]arenes." ChemInform 32, no. 51 (2010): no. http://dx.doi.org/10.1002/chin.200151082.

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46

BOEHMER, V., and W. VOGT. "ChemInform Abstract: Calix(4)arenes, Bridged at the Upper Rim." ChemInform 24, no. 19 (2010): no. http://dx.doi.org/10.1002/chin.199319295.

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47

Chapman, David M. "Development of the tentacles and food groove in the jellyfish Aurelia aurita (Cnidaria: Scyphozoa)." Canadian Journal of Zoology 79, no. 4 (2001): 623–32. http://dx.doi.org/10.1139/z01-016.

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The development of the tentacle-bearing part of the rim of the jellyfish Aurelia aurita is described. The newly liberated ephyra lacks appendages at the bell rim between the rhopalial arms (null stage). The next stage (bump stage) has a subumbrellar bump near the rim. The bump then forms a tongue process (tongue stage) on its adoral side. The aboral part of the bump becomes the primordium of the tentacle. The tongue process elongates and spreads circumferentially, finally melding with the lappets of the rhopalial arms. Next the tongue process develops a groove that spreads laterally. The epith
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48

Kalchenko, Olga, Andrew Solovyov, and Vitaly Kalchenko. "Recognition and Binding of Aliphatic Dicarboxylic Acids C4 – C10 by Diiminocalix[4]arene." French-Ukrainian Journal of Chemistry 7, no. 2 (2019): 61–67. http://dx.doi.org/10.17721/fujcv7i2p61-67.

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Host-Guest complexation of 5,17-bis-(N-tolyliminomethyl)-25,27-dipropoxycalix[4]arenewithaliphatic dicarboxylicacidsC4 – C10 hasbeenstudiedin water-organic solution by the RP HPLC and molecular modeling methods. The stability constants (log KA =2.56– 3.05) of the supramolecular complexes are depended on structure, pKa and log Pvalues of the acids. The complexation is determined by the hydrogen bonds of the COOH group of the dicarboxylic acids with nitrogen atoms at the upper rim or oxygen atoms at the lower rim of the calixarene.
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49

Zadmard, Reza, Parinaz Ataeian, and Maryam Khalili-Foumeshi. "C-Silylated Calix[4]Arene as a New Receptor for Aspartate in Polar Solvents." Organic Chemistry International 2011 (July 27, 2011): 1–5. http://dx.doi.org/10.1155/2011/171374.

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The recognition of aspartic acid derivatives such as N-benzyloxycarbonyl-D-aspartate (NZDA) with the calix[4]arene derivatives with multiple silicon groups at the upper rim in polar solvents is investigated.
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50

Shkrabak, O. A., T. O. Veklich, R. V. Rodik, V. I. Kalchenko та S. O. Kosterin. "Inhibition of plasma membrane Сa(2+),Mg(2+)-АТРase by сalixarene sulfonylamidines. Structure-activity relationship". Ukrainian Biochemical Journal 94, № 4 (2022): 18–35. http://dx.doi.org/10.15407/ubj94.04.018.

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Previously we have already shown that tetrasulfonylamidinecalixarene C-90 inhibited plasma membrane Са2+,Mg2+-АТРаse of smooth muscle cells selectively to other ATPases of plasma membrane. To inhance the inhibitory effect of calixarenes several alkoxycalixarene sulfonylamidines structurally similar to calixa­rene C-90 were synthesized and their effects on the mentioned enzyme activity, the level of cytoplasmic Ca2+ concentration and hydrodynamic diameter of isolated smooth muscle cells were checked. It was shown that sulfonylamidino groups are crucial for Са2+,Mg2+-АТРаse inhibition, the effic
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