Chemical Synthesis and Biological Evaluation of Palmerolide A Analogues
作者:K.C. Nicolaou、Gulice Y. C. Leung、Dattatraya H. Dethe、Ramakrishna Guduru、Ya-Ping Sun、Chek Shik Lim、David Y.-K. Chen
DOI:10.1021/ja802803e
日期:2008.7.1
Molecular design and chemicalsynthesis of several palmerolide A analogues allowed the first structure activity relationships (SARs) of this newly discovered marine antitumor agent. From several analogues synthesized and tested (ent- 1, 5- 14, 21- 26, 50, 51), compounds 25 (with a phenyl substituent on the side chain) and 51 (lacking the C-7 hydroxyl group) were the most interesting, exhibiting approximately
几种palmerolide A 类似物的分子设计和化学合成允许这种新发现的海洋抗肿瘤剂的第一个结构活性关系(SAR)。从合成和测试的几个类似物(ent-1、5-14、21-26、50、51)中,化合物 25(在侧链上有苯基取代基)和 51(缺少 C-7 羟基)是最多的有趣的是,与天然产物相比,其效力和等价性分别增加了大约 10 倍。这些发现为更集中的结构活性关系研究指明了方向。
Absolute configuration of curacin A, a novel antimitotic agent from the tropical marine cyanobacterium Lyngbya majuscula
作者:Dale G. Nagle、Robin S. Geralds、Hye-Dong Yoo、William H. Gerwick、Tae-Seong Kim、Mitch Nambu、James D. White
DOI:10.1016/0040-4039(95)00030-g
日期:1995.2
Curacin A is a structurally novel antimitotic agent isolated from the Caribbean cyanobacterium Lyngbyamajuscula. Its planar structure has been previously determined from a spectroscopic investigation. Here, we define the complete relative and absolute configuration of curacin A by comparison of products obtained from chemical degradation of the natural product with the same substances prepared by
Absolute Configuration and Total Synthesis of (+)-Curacin A, an Antiproliferative Agent from the Cyanobacterium <i>Lyngbya majuscula</i>
作者:James D. White、Tae-Seong Kim、Mitch Nambu
DOI:10.1021/ja9629874
日期:1997.1.1
The absoluteconfiguration of curacin A was determined as (2R,13R,19R,21S)-1 by comparison of degradation products 2 and 3 with the same materials prepared by asymmetricsynthesis. The total synthesis of 1 was completed from (1R,2S)-2-methylcyclopropanecarboxylic acid (8) and the amino alcohol derivative 46. The latter was prepared from 4-pentynal (14) and the Garner aldehyde (43). Asymmetric allylation
Synthesis of vitamin D analogues with a 2-hydroxy-3-deoxy ring A
作者:Eva Marı́a Codesido、Marı́a Magdalena Cid、Luis Castedo、Antonio Mouriño、Juan R Granja
DOI:10.1016/s0040-4039(00)00989-8
日期:2000.7
We present a short, practical synthesis of new C2-hydroxylated vitamin D analogues. The enantioselective synthesis of a phosphine oxide precursor involves, as key step, a catalytic asymmetric allylation. (C) 2000 Elsevier Science Ltd. All rights reserved.
Synthesis of Curacin A: A Powerful Antimitotic from the Cyanobacterium Lyngbya majuscula