Efficient synthesis of (2R,3R)- and (2S,3S)-2,3-diaminobutane-1,4-diol and their dibenzyl ethers
作者:Andreas Scheurer、Paul Mosset、Rolf W Saalfrank
DOI:10.1016/s0957-4166(97)00086-4
日期:1997.4
(2R,3R)-2,3-Diaminobutane-1,4-diol 6 and its dibenzyl ether 7 were efficiently synthesized starting from L-tartaric acid 1a. The crucial step, debenzylation of intermediate dibenzyloxydiazide 4, was accomplished in good yield by boron trichloride-dimethyl sulfide complex. The enantiomeric series was similarly obtained starting from D-tartaric acid.
(2 - [R,3 - [R)-2,3-二氨基丁烷-1,4-二醇6和它的二苄基醚7被有效地合成从L-酒石酸起始1A。关键步骤是中间体二苄氧基二叠氮化物4的脱苄基反应,是通过三氯化硼-二甲基硫醚络合物以高收率完成的。从D-酒石酸类似地获得对映体系列。