Synthesis of Enantiomerically Pure and Compatibly Protected (2<i>S</i>,3<i>R</i>)- and (2<i>S</i>,3<i>S</i>)-Diaminobutyric Acids
作者:U. Schmidt、K. Mundinger、B. Riedl、G. Haas、R. Lau
DOI:10.1055/s-1992-26332
日期:——
Enantiomerically pure (2S,3R)- and (2S,3S)-2, 3-diaminobutyric acids with Fmoc protected α-amino groups and compatibly protected β-amino groups [(2S,3R)- and (2S,3S)-3-(tert-butoxycarbonyl-amino)-2-(fluoren-9- ylmethoxycarbonylamino)butyric acid] can be prepared in decagram amounts starting from L-threonine and L-allothreonine via the corresponding hydrazides by the Mitsunobu reaction.
(2S,3R)-和(2S,3S)-2, 3-二氨基丁酸具有 Fmoc 保护的 δ-氨基基团和兼容保护的 ²-氨基基团[(2S,3R)-和 (2S、(2S,3R)-和(2S,3S)-3-(叔丁氧羰基氨基)-2-(芴-9-甲氧羰基氨基)丁酸]可以从 L-苏氨酸和 L-异苏氨酸通过相应的酰肼经 Mitsunobu 反应制备成十克量。