acetoxyl groups. Confirmation of some of the configurational assignments was obtained when di-N-acetyldeoxystreptamine 24a was oxidized by periodate to give a diacetamidopentanedial which was proved to be identical with 5 when it reacted with nitromethane to give the same cyclohexanoid products. When 11d was deaminated as described and the product treated with CrO3, a ketonic compound (1,3/4,6)-4,6-diacetamido-1
先前报道的将
环戊烷型
环醇转化为环己
氨酸
氨基
环醇的方法已应用于(1,2 / 3,5)-3,5-diacetamidocyclopentane-1,2-diol 4a,以生产(1,3 / 2)的乙酰化衍
生物,4,6)-4,6-二
氨基
环己烷-1,2,3-三醇(脱氧链胺)24,差向异构体(1,2,3 / 4,6)-二
氨基三醇9和相应的2,4,6-三
氨基
环己烷-1,3
-二醇11和10。通过用
叠氮化
钠处理将众所周知的顺式-3,5-二
溴-1-
环戊烯1转化为顺式-3,5-二
叠氮基-1-
环戊烯2。用KMnO 4氧化2得到(1,2 / 3,5)-3,5-二
叠氮基
环戊烷-1,2
-二醇3a,将其乙酰化为二-O-乙酰基衍
生物3b。用Pd-C催化剂氢化和乙酰化得到(1,2 / 3,5)-3,5-
二乙酰氨基-1,2-二-O-乙酰基
环戊烷-1,2
-二醇4b并用
甲醇NH 3选择性脱乙酰得到
二乙酰氨基二醇4a。的NMR谱2,