Synthese von 3-desoxy-3-amino-vitamin D3 und 3-desoxy-3-epiamino-vitamin D3 und D2
作者:Hans Loibner、Erich Zbiral
DOI:10.1016/0040-4020(78)88109-5
日期:1978.1
Vitamin D2 and D3 are transformed with triphenylphosphane-diethylazodicarboxylate-HN3 into the epimeric azidoderivatives 1 and 3 with inversion of the configuration at C-3. Reduction with LiAlH4 yields 3-desoxy-3-epiamino-vitamin D2 and D3 2 and 4, which are characterized as their acetamides 2a and 4a. Furthermore epivitamin D3-p-nitrobenzoate 5 is produced by reaction of vitamin D3 with triphenyl-
维生素D 2和D 3用三苯基膦-二乙基偶氮二甲酸-HN 3转化为差向异构的叠氮衍生物1和3,但其构型在C-3上相反。用LiAlH 4还原产生3-脱氧-3-表氨基维生素D 2和D 3 2和4,其特征在于它们的乙酰胺2a和4a。此外epivitamin d 3 - p -nitrobenzoate 5是由维生素d反应生成3与三苯基phosphanediethylazodicarboxylate-对硝基苯甲酸,皂化后可生成维生素E D 3 5a。利用同样的方法,用epivitamin d以上引线3到5A 3-脱氧-3- azidovitamin d 3 6,其被还原成3-脱氧-3-氨基-维生素d 3 7通过的LiAlH 4和表征其乙酰胺7a中。