The chemistry of thujone. VIII. Thujone as a chiral synthon for the synthesis of optically active steroid analogues. The enol lactone route
作者:James P. Kutney、Peter Grice、Keith O. Pascoe、Krystyna Piotrowska、Steven J. Rettig、Jerzy Szykula、James Trotter
DOI:10.1002/hlca.19830660620
日期:1983.9.21
The thujone-derived enone 1 is converted via enol lactone intermediates 4 and 5 to the optically active steroidal analogue 13 and the corresponding 19-norsteroid analogue 14. The structure of 13 was determined by X-ray diffraction analysis. The acid-catalyzed cyclopropane-ring opening of 13 and ozonolysis of the resulting olefin provided the 16-keto-steroid analogue 18.