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Asterane, XXII. Synthese eines doppelten Tetraasterans: Nonacyclo[10.8.0.0 2,11 .0 4,9 .0 4,19 .0 6,17 .0 7,16 .0 9,14 .0 14,19 ]eicosan
Author(s) -
Hoffmann Volker Thomas,
Musso Hans
Publication year - 1991
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19911240118
Subject(s) - chemistry , adduct , stereochemistry , medicinal chemistry , organic chemistry
Asteranes, XXII 1) . — Synthesis of a Double Tetraasterane: Nonacyclo[10.8.0.0 2,11 .0 4,9 .0 4,19 .0 6,17 .0 7,16 .0 9,14 .0 14,19 ]eicosane 1,4,5,8‐Tetrahydronaphthalene‐2,3‐dicarboxylic anhydride ( 9 ) is dimerized by UV light in dioxane yielding four isomeric [2 + 2] adducts whose methyl ester derivatives are elucidated spectroscopically. The structures of the major products 14 and 16 have been confirmed by X‐ray structure analysis. Degradation of the carboxylic groups of 14 afforded the title compound 5 .