The stereocontrolled photoaddition of allene to cyclopent-1-ene-1-carboxaldehydes. A total synthesis of (±) steviol methyl ester and isosteviol methyl ester
作者:Frederick E. Ziegler、James A. Kloek
DOI:10.1016/0040-4020(77)80089-6
日期:1977.1
The stereochemistry of the photoaddition of allene to hydroindenal 19 is explored. The stereochemistry is proven by conversion into steviol methyl ester 22b and isosteviol methyl ester 24.
作者:Ernest Wenkert、Banavara L. Mylari、Linda L. Davis
DOI:10.1021/ja01016a054
日期:1968.7
Cyclopentanone synthesis by intramolecular carbon-hydrogen insertion of diazo ketones. A diterpene-to-steroid skeleton conversion
作者:Ernest Wenkert、Linda L. Davis、Banavara L. Mylari、Mary F. Solomon、Roberto R. Da Silva、Sol Shulman、Ronald J. Warnet、Paolo Ceccherelli、Massimo Curini、Roberto Pellicciari