Regiospecific (Biogenetic-type) Synthesis of 2-Methyl-5H-pyranobenzopyran-4-one, the Basic Skeleton in Citromycetin

DOI: 10.1039/c39810000761

Source and publish data:

Journal of the Chemical Society. Chemical communications p. 761 - 762 (1981)

Update date:2022-08-03

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Authors:

Watanabe, Toshio

Katayama, Sadamu

Nakashita, Yoshihiko

Yamauchi, Masashige

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Article abstract of DOI:10.1039/c39810000761

Regiospecific cyclization of the acetal (4g), derived in 5 steps from 2'-benzyloxyacetophenone (3a), gave the pyrone (6a) which was easily converted into 2-methyl-5H-pyrano<3,2-c><1>benzopyran-4-one (1b), the basic skeleton in citromycetin (1a).

Full text of DOI:10.1039/c39810000761

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