Component-based syntheses of trioxacarcin A, DC-45-A1 and structural analogues.
Component-based syntheses of trioxacarcin A, DC-45-A1 and structural analogues.
复制标题
基于组件的三XACARCIN A,DC-45-A1和结构类似物的合成。
作者:
The trioxacarcins are polyoxygenated, structurally complex natural products that potently inhibit the growth of cultured human cancer cells. Here we describe syntheses of trioxacarcin A, DC-45-A1, and structural analogs by latestage, stereoselective glycosylation reactions of fully functionalized, differentially protected aglycon substrates. Key issues addressed in this work include the identification of an appropriate means to activate and protect each of the two 2-deoxysugar components, trioxacarcinose A and trioxacarcinose B, as well as a viable sequencing of the glycosidic couplings. The convergent, component-based sequence we present allows for rapid construction of structurally diverse, synthetic analogs that would be inaccessible by any other means, in amounts required to support biological evaluation. Analogs arising from modification of four of five modular components are assembled in 11 steps or fewer. The majority of these are found to be active in antiproliferative assays using cultured human cancer cells.
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DOI:
10.1021/jo8017846
发表时间:
2009-01-16
期刊:
The Journal of organic chemistry
影响因子:
--
作者:
Yang MT;Woerpel KA
通讯作者:
Woerpel KA
影响因子:
3.3
作者:
TOMITA, F;TAMAOKI, T;FUJIMOTO, K
通讯作者:
FUJIMOTO, K
影响因子:
3.8
作者:
BOYD, MR;PAULI, KD
通讯作者:
PAULI, KD
影响因子:
15
作者:
Pedersen, Christian Marcus;Nordstrom, Lars Ulrik;Bols, Mikael
通讯作者:
Bols, Mikael
影响因子:
5.2
作者:
Magauer, Thomas;Myers, Andrew G.
通讯作者:
Myers, Andrew G.