Stereoselective Synthesis of all Stereoi
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Susan Gair; Richard F.W Jackson*; Paul A Brown
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Article
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1997
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Elsevier Science
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French
โ 501 KB
Diastereoselectivemethylationof the ketone 5a leads ro the anti-derivative4a; the other diastereoisomer 4b may be obrained by a deprotonatiotrheprotonationsequence. Each of the methylatedproductsmay be reducedstereoselectivelyin either sense by appropriatechoice of reagent, providinga route to all s