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Absolute configurations of talaromycones A and B, ?-diversonolic ester, and aspergillusone B from endophytic Talaromyces sp. ECN211.

ABSTRACT: Talaromycones A (1) and B (2), new xanthenediones, were isolated from the cultures of Talaromyces sp. ECN211, an endophytic fungus, along with ?-diversonolic ester (3), aspergillusone B (4), glauconic acid (5), and rosellisin (6). The planar structures of 1 and 2 were elucidated by extensive spectroscopic analyses. Furthermore, the absolute configurations of 1-4 were determined by single-crystal X-ray diffraction and electronic circular dichroism spectroscopy (ECD). In addition, the crystallographic data for 5 were updated for the first time in over 50 years.

SUBMITTER: Nakashima KI

PROVIDER: S-EPMC7059540 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Absolute configurations of talaromycones A and B, α-diversonolic ester, and aspergillusone B from endophytic Talaromyces sp. ECN211.

Nakashima Ken-Ichi KI Tomida Junko J Hirai Takao T Kawamura Yoshiaki Y Inoue Makoto M

Beilstein journal of organic chemistry 20200228

Talaromycones A (1) and B (2), new xanthenediones, were isolated from the cultures of Talaromyces sp. ECN211, an endophytic fungus, along with α-diversonolic ester (3), aspergillusone B (4), glauconic acid (5), and rosellisin (6). The planar structures of 1 and 2 were elucidated by extensive spectroscopic analyses. Furthermore, the absolute configurations of 1-4 were determined by single-crystal X-ray diffraction and el ...[more]

PMID: 32180845

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