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Phomapyrrolidones A-C,来源于内生真菌 Phoma sp. NRRL 46751 的抗结核生物碱。

Phomapyrrolidones A-C, antitubercular alkaloids from the endophytic fungus Phoma sp. NRRL 46751.

机构信息

Southwest Center for Natural Products Research and Commercialization, School of Natural Resources and the Environment, College of Agriculture and Life Sciences, The University of Arizona , 250 E. Valencia Road, Tucson, Arizona 85706, United States.

出版信息

J Nat Prod. 2013 Oct 25;76(10):1860-5. doi: 10.1021/np400391p. Epub 2013 Sep 30.

Abstract

Three new alkaloids, phomapyrrolidones A-C (1-3), bearing a cyclopenta[b]fluorene ring system were isolated from the mycelium extract of the endophytic fungal strain Phoma sp. NRRL 46751, inhabiting Saurauia scaberrinae. Methylation of 1 afforded its N-methyl derivative 4. The planar structures and relative configurations of 1-4 were elucidated by extensive spectroscopic analysis. Phomapyrrolidones B (2) and C (3) exhibited weak antitubercular activity at subcytotoxic concentrations.

摘要

从内生真菌 Phoma sp. NRRL 46751 的菌丝体提取物中分离得到了三个新的生物碱,phomapyrrolidones A-C(1-3),它们都含有一个环戊[b]芴环系统。1 通过甲基化得到了它的 N-甲基衍生物 4。通过广泛的光谱分析阐明了 1-4 的平面结构和相对构型。phomapyrrolidones B(2)和 C(3)在亚细胞毒性浓度下表现出微弱的抗结核活性。

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