Catalytic enantioselective silylation of acyclic and cyclic triols: application to total syntheses of cleroindicins D, F, and C.

Catalytic enantioselective silylation of acyclic and cyclic triols: application to total syntheses of cleroindicins D, F, and C.
复制标题

无环和环状三醇的催化对映选择性硅化:应用于克里米德蛋白D,F和C的总合成。

DOI:
10.1002/anie.200805338
复制
发表时间:
2009
影响因子:
16.6
通讯作者:
Snapper, Marc L.
Snapper, Marc L.
中科院分区:
化学1区
文献类型:
--
作者:
You, Zhen;Hoveyda, Amir H.;Snapper, Marc L.

文献摘要

参考文献

被引文献

相似文献

促进多功能分子位点选择性修饰的催化剂在选择性化学合成中具有重要的应用价值特别重要的是手性催化剂,它可以引发多氧分子[2]的对映选择性功能化,[2]是生物活性剂中常见的实体。在这里,我们提出了非环和环1,2,3 -三醇的对映选择性硅基化[3]的方法[Eq.(1)];这种转化是由一种容易获得的小分子催化剂促进的,并提供具有相邻二醇部分的硅醚,其分子量高达> - 99:< 1 er (> - 98% ee)。通过本报告中描述的方案获得的对映体富集的硅基保护三醇不能通过催化或化学计量二羟基化(包括定向变体)选择性地制备在对映选择性全合成cleroindicins D、F和C的过程中,证明了新催化工艺的实用性。cleroindicins D、F和C是从中国用于治疗疟疾和风湿病的植物Clerodendum indicum中分离出来的天然产物。(6、7)
Catalysts that promote site-selective modification of poly-functional molecules can be of significant utility in selective chemical synthesis.[1] Of particular importance are chiral catalysts that initiate enantioselective functionalization of polyoxygenated molecules [2]—entities commonly found among biologically active agents. Herein, we present methods for the enantioselective silylations [3] of acyclic and cyclic 1, 2, 3-triols [Eq.(1)]; the transformations are promoted by a readily available small-molecule catalyst and afford silyl ethers that bear a neighboring diol moiety in up to> 99:< less than 1 er (> 98% ee). Enantiomerically enriched silyl-protected triols obtained by the protocols described in this report cannot be selectively prepared by catalytic or stoichiometric dihydroxylations [4](including the directed variants).[5] The utility of the new catalytic processes is demonstrated in the context of enantioselective total syntheses of cleroindicins D, F, and C, natural products isolated from Clerodendum indicum, a plant used in China to battle malaria and rheumatism.[6, 7]
DOI: 10.1016/j.bmcl.2007.07.064
发表时间: 2007-11-01
影响因子: 2.7
作者:
Vadivel, Subramanian K.;Vardarajan, Sundarararnan;Makriyannis, Alexandros
通讯作者: Makriyannis, Alexandros
DOI: 10.1021/ol702236e
发表时间: 2007-11-22
期刊: ORGANIC LETTERS
影响因子: 5.2
作者:
Barradas, Silvia;Carmen Carreno, M.;Urbano, Antonio
通讯作者: Urbano, Antonio
DOI: 10.1021/jo050956y
发表时间: 2005-08-05
影响因子: 3.6
作者:
Lei, XG;Zaarur, N;Porco, JA
通讯作者: Porco, JA
DOI: 10.1002/anie.200703650
发表时间: 2007-01-01
影响因子: 16.6
作者:
Zhao, Yu;Mitra, Aurpon W.;Snapper, Marc L.
通讯作者: Snapper, Marc L.
DOI: 10.1016/j.tetlet.2006.11.073
发表时间: 2007-01-15
影响因子: 1.8
作者:
Felpin, Francois-Xavier
通讯作者: Felpin, Francois-Xavier