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Journal articles on the topic 'Annellation'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Czugler, Mátyás, and Petra Bombicz. "6,7-Dimethyl-3a,8a-dihydro-3H-8-oxacyclopenta[a]inden-5-yl benzoate." Acta Crystallographica Section E Structure Reports Online 57, no. 1 (2000): o37—o38. http://dx.doi.org/10.1107/s1600536800018821.

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The title compound, C20H18O3, was prepared in a one-step synthesis by intramolecular cyclization following the sigmatropic rearrangement of the allyl aryl ether intermediate. The room-temperature crystal structure determination reveals acisconformation of the ring annellation.
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2

Burnell, D. Jean, and Yong-Jin Wu. "A very short synthesis of 3-methoxyestra-1,3,5,8,14-pentaen-17-one." Canadian Journal of Chemistry 67, no. 5 (1989): 816–19. http://dx.doi.org/10.1139/v89-125.

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3-Methoxyestra-1,3,5,8,14-pentaen-17-one (4) was prepared from 6-methoxy-1-tetralone (8) by an efficient two-pot procedure in which the D ring was generated by the Lewis acid catalysed reaction of 1,2-bis(trimethylsiloxy)cyclobutene (5) with an appropriate ketal (10). Keywords: steroid, estrone, annellation.
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3

Kraxner, Johannes, and Peter Gmeiner. "Regiocontrolled Annellation Reactions Starting from Diethoxymethyl Protected Indole." Synthesis 2000, no. 08 (2000): 1081–83. http://dx.doi.org/10.1055/s-2000-6329.

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4

Paddon-Row, Michael N., and Harish K. Patney. "An Efficient Synthetic Strategy for Naphthalene Annellation of Norbornenylogous Systems." Synthesis 1986, no. 04 (1986): 328–30. http://dx.doi.org/10.1055/s-1986-31603.

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5

Schultze, Christiane, and Bernd Schmidt. "Ring-closing-metathesis-based synthesis of annellated coumarins from 8-allylcoumarins." Beilstein Journal of Organic Chemistry 14 (December 5, 2018): 2991–98. http://dx.doi.org/10.3762/bjoc.14.278.

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8-Allylcoumarins are conveniently accessible through a microwave-promoted tandem Claisen rearrangement/Wittig olefination/cyclization sequence. They serve as a versatile platform for the annellation of five- to seven-membered rings using ring-closing olefin metathesis (RCM). Furano-, pyrano-, oxepino- and azepinocoumarins were synthesized from the same set of precursors using Ru-catalyzed double bond isomerizations and RCM in a defined order. One class of products, pyrano[2,3-f]chromene-2,8-diones, were inaccessible through direct RCM of an acrylate, but became available from the analogous all
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6

Davey, Andrew E., and Richard J. K. Taylor. "A novel 1,3-dithiane-based cyclopenta-annellation procedure: synthesis of the rocaglamide skeleton." Journal of the Chemical Society, Chemical Communications, no. 1 (1987): 25. http://dx.doi.org/10.1039/c39870000025.

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7

Oña-Ruales, Jorge O., and Yosadara Ruiz-Morales. "The Predictive Power of the Annellation Theory: The Case of the C32H16 Benzenoid Polycyclic Aromatic Hydrocarbons." Journal of Physical Chemistry A 118, no. 28 (2014): 5212–27. http://dx.doi.org/10.1021/jp504257k.

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8

Oña-Ruales, Jorge O., and Yosadara Ruiz-Morales. "The Predictive Power of the Annellation Theory: The Case of the C26H16Cata-Condensed Benzenoid Polycyclic Aromatic Hydrocarbons." Journal of Physical Chemistry A 119, no. 42 (2015): 10451–61. http://dx.doi.org/10.1021/acs.jpca.5b07681.

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9

Möhrle, Hans, та Peter Schillings. "Anellierungsreaktionen von α-(Dihydro-β-carbolinium)-keton-Derivaten. Annellation Reactions of α-(Dihydro-β-carbolinium)-ketone-Derivatives". Archiv der Pharmazie 319, № 7 (1986): 659–61. http://dx.doi.org/10.1002/ardp.19863190716.

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10

Ballester, Pablo, Angel García-Raso, and Ramón Mestres. "Dienolates Derived from Unsaturated Carboxylic Acids in Synthesis. Four-Carbon Annellation of Cycloalkanones; Improved Synthesis of Bicyclo[n.4.0]alken-2-ones." Synthesis 1985, no. 08 (1985): 802–6. http://dx.doi.org/10.1055/s-1985-31357.

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11

Rashed, Nagwa, Hamida Abdel Hamid, El Sayed Ramadan, and El Sayed H. El Ashry. "AcycloC-Nucleoside Analogs. Regioselective Annellation of a Triazole Ring to 5-Methyl-1,2,4-Triazino[5,6-b]Indole and Formation of Certain 3-Poly Hydroxyalkyl Derivatives." Nucleosides and Nucleotides 17, no. 8 (1998): 1373–84. http://dx.doi.org/10.1080/07328319808003476.

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12

Dave, Chaitanya, and Rina Shah. "Annellation of Triazole and Tetrazole Systems onto Pyrrolo[2,3-d]pyrimidines: Synthesis of Tetrazolo[1,5-c]-pyrrolo[3,2-e]-pyrimidines and Triazolo[1,5-c]pyrrolo-[3,2-e]pyrimidines as Potential Antibacterial Agents." Molecules 7, no. 7 (2002): 554–65. http://dx.doi.org/10.3390/70700554.

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13

Calatayud, Vicent, and Javier Etayo. "Codonmyces and Lichenostella, Two New Genera of Lichenicolous Conidial Fungi." Lichenologist 31, no. 6 (1999): 593–601. http://dx.doi.org/10.1006/lich.1999.0235.

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AbstractThe new generic names Codonmyces and Lichenostetta are introduced for two new species of conidial fungi. Lichenostella hypotrachynae gen. et sp. nov. is a commensal of Hypotrachyna species, and is mainly characterized by forming black sporodochia with setae and, particularly, by its star-like conidia. Codonmyces lecanorae gen. et. sp. nov. occurs on Lecanora valesiaca and differs from the genus Xanthoriicola by its 1-septate conidia and campanulate conidiogenous cells with several conspicuous, flared annellations. Comments on the ecology of L. valesiaca, and its associated lichens and
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14

Benade, E., M. J. Wingfield, and P. S. Van Wyk. "Conidium development in the Hyalorhinocladiella anamorphs of Ceratocystiopsis minuta-bicolor and Ophiostoma minus." Canadian Journal of Botany 74, no. 6 (1996): 891–97. http://dx.doi.org/10.1139/b96-111.

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The genus Hyalorhinocladiella was characterized by its simple conidiophores with conidiogenous cells that proliferate sympodially. However, recent studies revealed that the Hyalorhinocladiella anamorph of Ophiostoma ips has annellidic conidium development. The aim of this study was to determine whether other species in the genus share this characteristic. Conidium development was examined in the type species, Hyalorhinocladiella minuta-bicolor, and in the Hyalorhinocladiella anamorph of Ophiostoma minus. Light and fluorescence microscopy indicated that conidia developed by sympodial proliferat
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15

PADDON-ROW, M. N., and H. K. PATNEY. "ChemInform Abstract: An Efficient Synthetic Strategy for Naphthalene Annellation of Norbornenylogous System." Chemischer Informationsdienst 17, no. 35 (1986). http://dx.doi.org/10.1002/chin.198635166.

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16

Trapani, Giuseppe, Antonia Reho, Andrea Latrofa, Flaviano Morlacchi, Gaetano Liso та Francesca Stasi. "Synthesis of pyrrolo[2,1-c][1,4]benzothiazines by annellation of 3-alkoxycarbonylmethylene-4H-1,4-benzothiazines (β-enamine esters) with dimethyl acetylenedicarboxylate". J. Chem. Soc., Perkin Trans. 1, 1987, 1027–31. http://dx.doi.org/10.1039/p19870001027.

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17

TRAPANI, G., A. REHO, A. LATROFA, F. MORLACCHI, G. LISO та F. STASI. "ChemInform Abstract: Synthesis of Pyrrolo(2,1-c) (1,4)benzothiazines by Annellation of 3-Alkoxycarbonylmethylene-4H-1,4-benzothiazines (β-Enamine Esters) with Dimethyl Acetylenedicarboxylate." ChemInform 18, № 35 (1987). http://dx.doi.org/10.1002/chin.198735239.

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18

Nesi, Rodolfo, Stefano Chimichi, Donatella Giomi, Piero Sarti-Fantoni, and Piero Tedeschi. "A new spiro annellation reaction in the isoxazole series: applications and limits. Part 2. Reactivity of ethyl 4-nitro-3-phenylisoxazole-5-carboxylate with nitrogen binucleophiles." Journal of the Chemical Society, Perkin Transactions 1, 1987, 1005. http://dx.doi.org/10.1039/p19870001005.

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19

NESI, R., S. CHIMICHI, D. GIOMI, P. SARTI-FANTONI, and P. TEDESCHI. "ChemInform Abstract: A New Spiro Annellation Reaction in the Isoxazole Series: Applications and Limits. Part 2. Reactivity of Ethyl 4-Nitro-3-phenylisoxazole-5-carboxylate with Nitrogen Binucleophiles." ChemInform 18, no. 35 (1987). http://dx.doi.org/10.1002/chin.198735186.

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