Studies toward the total synthesis of irumamycin: stereoselective preparation of the C(15)–C(27) segment via two-directional chain synthesis
作者:Tomoyasu Hirose、Toshiaki Sunazuka、Daisuke Yamamoto、Mutsumi Mouri、Yoshiaki Hagiwara、Takanori Matsumaru、Eisuke Kaji、Satoshi Ōmura
DOI:10.1016/j.tetlet.2006.11.079
日期:2007.1
synthesized. Stereoselective assembly of C16, 17, 22, and an extra C21 stereocenter was achieved by two-directional Brown’s asymmetric allyl boration. Group selective PMP acetal formation and oxidative cleavage of vinyl group facilitated the differentiation of the ends of a two-directionally synthesized chain.
合成了伊柔霉素(1)的C(15)–C(27)部分的基本结构。C16、17、22和一个额外的C21立体中心的立体选择性组装是通过双向布朗不对称烯丙基硼酸化实现的。基团选择性PMP缩醛的形成和乙烯基的氧化裂解促进了双向合成链末端的分化。