Total Synthesis of Hinduchelins A–D, Stereochemical Revision of Hinduchelin A, and Biological Evaluation of Natural and Unnatural Analogues
作者:Elizabeth S. Childress、Aaron T. Garrison、Jessica R. Sheldon、Eric P. Skaar、Craig W. Lindsley
DOI:10.1021/acs.joc.9b00391
日期:2019.5.17
Here, we report the first total synthesis of hinduchelins A-D, a family of nontoxic catechol derivatives from Streptoalloteichus hindustanus, possessing a druglike chemotype and modest iron-chelating ability. A concise synthesis was developed employing methyl 5-methyloxazole-4-carboxylate as a single starting material to provide hinduchelins A-D (and unnatural analogues) in only four steps and 5-15%
在这里,我们报告印度斯坦蛋白AD的第一个全合成,这是一种来自印度斯坦链霉菌的无毒儿茶酚衍生物,具有类似药物的化学型和适度的铁螯合能力。开发了一种简明的合成方法,该方法使用5-甲基恶唑-4-羧酸甲酯作为单一原料,仅需四个步骤即可获得印度后腿素AD(和非天然类似物),总收率为5-15%。此外,将印度uchelelin A的立体化学从(S)重新分配给(R)。生物学评估证实,天然和非天然的印度菊粉是弱铁螯合剂(铁载体)。