作者:Katsunori Tsuboi、Yoshiyasu Ichikawa、Yimin Jiang、Atsushi Naganawa、Minoru Isobe
DOI:10.1016/s0040-4020(97)00230-5
日期:1997.4
The synthesis of Segment B/C corresponding to the C26 through to the C1 positions of tautomycin was achieved by coupling between Segment B (an epoxide) and Segment C (a sulfone carbanion) in the presence of boron trifluoride etherate (BF3·OEt2). Two routes have been developed in esterification of Segment A with Segment B/C. The first route employed Segment A with furan moiety as masked maleic anhydride
在存在三氟化硼醚化物(BF 3 ·OEt 2)的情况下,通过段B(环氧化物)和段C(砜碳负离子)之间的偶合,可以合成对应于互变异构体C26至C1位置的B / C段)。在用链段B / C酯化链段A中已经开发出两种途径。第一种方法使用具有呋喃部分的A段作为掩蔽的马来酸酐。在第二种方法中,直接使用马来酸酐作为链段A来完成改进的合成。在最后一步用吡啶鎓聚(氟化氢)(HF-Py)去除甲硅烷基保护基团完成了互变霉素的全合成。