Tetrahedron Letters p. 1099 - 1102 (1998)
Update date:2022-08-05
Topics:
Guo, Chuangxing
Fuchs
The protected aglycone (21e-β) of the potent anti-tumor agent OSW-1 (1) was synthesized in 9 steps from 5-androsten-3β-ol-17-one (10) in 55% overall yield. Key reactions involve ene installation of the side chain, regio and stereoselective dihydroxylation and diastereoselective reduction of the C16 ketone.
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(1998)