The disubstituted analogs of taurine, (±)-erythro- and (±)-threo-2-amino-1,2-diphenyl-ethanesulfonic acids were prepared from (±)-cis- and (±)-trans-2-benzyl-3,4-diphenyl-1,2-thiazetidine 1,1-dioxides, respectively, by diastereoselective hydrolysis of the sulfonamide bond, followed by N-debenzylation.
通过非对映选择性
水解磺酰胺键,然后进行 N-脱苄基反应,分别从(±)-顺式和(±)-反式-2-苄基-3,4
-二苯基-1,2-
噻嗪-1,1-二氧杂
环丁烷制备了
牛磺酸的二取代类似物--(±)-赤式和(±)-苏式-2-
氨基-1,2-二苯基
乙磺酸。