合成这些去叔丁基二苯基甲硅烷氧基-2″乙基-6'[羟甲基-1'乙基]-6全氢三甲基-3,5,5'螺双-2:2'-吡喃经由la反应二氢-3,4甲氧基甲氧基甲基-1 ' 乙基-2 甲基-3 吡喃 avec le bromo-1 t-丁基二甲基甲硅烷氧基-4 t-丁基二苯基甲硅烷氧基-6 甲基-3 己烷。应用a la 合成de la calcimycine
The fully stereocontrolledsynthesis of A23187 by using the chirons derived from D-glucose is described.
描述了通过使用衍生自D-葡萄糖的Chirons来完全立体控制的A23187合成。
Total synthesis of tetranormethyl-calcimycin.
作者:Yoshiaki NAKAHARA、Akira FUJITA、Tomoya OGAWA
DOI:10.1271/bbb1961.51.1009
日期:——
The title compound 2 was synthesized. Asymmetric epoxidation of 9 followed by reductive cleavage of the epoxide 10 and acidification gave a symmetrical spiroketal (3), to which pyrrole and benzoxazole moieties were introduced in an efficient manner by the previously developed method. Since the synthetic material was less stable than natural calcimycin under basic conditions, cleavage of the methyl ester was achieved with LiI-pyridine.