Studies in marine macrolide synthesis: stereocontrolled synthesis of a C21–C34 subunit of the aplyronines
作者:Ian Paterson、Simon B Blakey、Cameron J Cowden
DOI:10.1016/s0040-4039(02)01217-0
日期:2002.8
The C21-C34 subunit 27 of the aplyronines, containing eight stereocentres and a terminal N-methyl-N-vinylformamide moiety, was prepared using the Horner-Wadsworth-Emmons coupling of beta-ketophosphonate 5 with aldehyde 19. The two stereotetrad sequences were constructed by chiral ketone aldol reactions, while the N-methyl-N-vinylformamide was introduced using a novel Wittig olefination. (C) 2002 Elsevier Science Ltd. All rights reserved.
Studies in marine macrolide synthesis: Stereocontrolled synthesis of the C1C11 and C15C27 subunits of aplyronine A
作者:Ian Paterson、Cameron J Cowden、Michael D Woodrow
DOI:10.1016/s0040-4039(98)01191-5
日期:1998.8
containing 4 stereocentres and the (E,E)-diene system, was prepared in 7 steps from ethylketone (R)-8 using a boron-mediated anti aldolreaction. The corresponding C15C27 subunit 5, containing 6 stereogenic centres and an (E)-alkene, was obtained in 10 steps from ketone (S)-14 using a tin(II)-mediated syn aldolreaction and CBS enone reduction.
所述aplyronineÇ 1 C 11亚基4,含有4个立体中心和(ë,ë) -二烯系统,在从乙基酮(R)-8 7个步骤制备使用硼介导的抗醛醇缩合反应。使用锡(II)介导的合成羟醛缩合反应和CBS烯酮还原反应,从酮(S)-14分10个步骤获得了相应的C 15 = C 27亚基5,该基团包含6个立体生成中心和一个(E)烯烃。
Cytotoxicity and actin-depolymerizing activity of aplyronine A, a potent antitumor macrolide of marine origin, and its analogs
Artificial analogs of aplyronine A (1), a potentantitumor macrolide, were synthesized and structure–activity (cytotoxicity and actin-depolymerizing activity) relationships were investigated; the side-chain in 1 was found to play a key role in both biological activities.