Abstract
Westphalen-type rearrangement of a 9α-hydroxy-11-ketone derived from lanosterol resulted in formation of two 19(10 → 9β)abeo-lanostenes representing the first lanostane-to-cucurbitane transformation. A novel ring A aromatic 9,10-seco derivative was formed as an acid catalysed cleavage product of 11-keto cucurbitenes. A cine 9 → 12 substitution led to the first 12-substituted lanostane derivatives and the first C-nor-D-homolanostane derivatives.
Publisher
Canadian Science Publishing
Subject
Organic Chemistry,General Chemistry,Catalysis
Cited by
16 articles.
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