Elansolid A, a Unique Macrolide Antibiotic from Chitinophaga sancti Isolated as Two Stable Atropisomers
作者:Heinrich Steinmetz、Klaus Gerth、Rolf Jansen、Nadin Schläger、Richard Dehn、Silke Reinecke、Andreas Kirschning、Rolf Müller
DOI:10.1002/anie.201005226
日期:2011.1.10
Elansolid A was isolated from Chitinophaga sancti (Flexibacter sancti ) as the two separable isomers A1 and A2 (1 and 1*, respectively). Molecular modeling revealed that they are stable atropisomers which are “frozen” by 14 inflexible bonds within the 19‐membered macrolide ring. The absolute configuration was established by synthesis of the C1–C11 fragment. Elansolid A2 shows activity against Gram‐positive
僵化性:从两个壳多糖(San Chitiophaga sancti(Flexibacter sancti ))中分离得到了Elansolid A,它是两个可分离的异构体A1和A2(分别为1和1 *)。分子模型显示它们是稳定的阻转异构体,被19元大环内酯环内的14个刚性键“冻结”。绝对构型是通过合成C1-C11片段而建立的。Elansolid A2对革兰氏阳性细菌具有活性。