Synthesis of (+)-(S)-Streptenol A and Biomimetic Synthesis of (2R,4S)- and (2S,4S)-2-(Pent-3-enyl)piperidin-4-ol
作者:Heribert Dollt、Peter Hammann、Siegfried Blechert
DOI:10.1002/(sici)1522-2675(19990707)82:7<1111::aid-hlca1111>3.0.co;2-l
日期:1999.7.7
(+)-(S)-Streptenol A is synthesized by coupling a 1,3-dithiane with an optically pure epoxide. The absolute configuration of (+)-(S)-streptenol A is thereby correlated with that of (S)-malic acid. Stereoselective reduction of an oxime that could easily be prepared from streptenol A gave the (3S,5R)- and (3S,5S)-aminostreptenols, and after cyclization, configurationally pure 2,4-functionalized piperidine alkaloids.
(+)-(S)-Streptenol A 是通过将 1,3-二硫杂烯与光学纯的环氧化物偶联来合成的。因此,(+)-(S)-streptenol A 的绝对构型与 (S)-苹果酸的构型相关联。从 streptenol A 出发,可以方便地制备出一个肟,并通过对其立体选择性地还原,得到了 (3S,5R)-和 (3S,5S)-氨基streptenol。经过环化后,进一步获得了构型纯的 2,4-官能化哌啶生物碱。