Divergent Synthesis of Cytotoxic Styryl Lactones Related to Goniobutenolides A and B, and to Crassalactone D
作者:Velimir Popsavin、Ivana Kovačević、Goran Benedeković、Mirjana Popsavin、Vesna Kojić、Gordana Bogdanović
DOI:10.1021/ol302860z
日期:2012.12.7
Goniobutenolides A (1) and B (2), crassalactone D (3), 4-epi-crassalactone D (4), and the corresponding 7-epimers have been synthesized starting from d-glucose. The key step in the synthesis of 1 and 2 is a new one-pot sequence comprised of a Z-selective Wittig olefination/lactonization/β-elimination. Preparation of 3 and 4 included the final 5-endo-trig spirocyclization of 1 and 2. The synthesized
从d-葡萄糖开始合成了Goniobutenolides A(1)和B(2),crassalactone D(3),4- epi- crassalactone D(4)和相应的7表位受体。合成1和2的关键步骤是一个新的一锅法序列,该序列由Z选择性维蒂希烯化/内酯化/β-消除反应组成。3和4的制备包括1和2的最终5-内-trig螺环化。评价合成产物对所选肿瘤细胞系的体外抗增殖活性。