NEW ANTIBIOTICS SF2315A AND B PRODUCED BY AN EXCELLOSPORA SP. II. THE STRUCTURAL ELUCIDATION

TORU SASAKI; SHUICHI GOMI; MASAJI SEZAKI; YASUO TAKEUCHI; YOSHIO KODAMA; KENJI KAWAMURA

doi:10.7164/antibiotics.41.843

NEW ANTIBIOTICS SF2315A AND B PRODUCED BY AN EXCELLOSPORA SP.

II. THE STRUCTURAL ELUCIDATION

TORU SASAKI, SHUICHI GOMI, MASAJI SEZAKI, YASUO TAKEUCHI, YOSHIO KODAMA, KENJI KAWAMURA

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JOURNAL FREE ACCESS

1988 Volume 41 Issue 7 Pages 843-848

DOI https://doi.org/10.7164/antibiotics.41.843

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Abstract

The structures of antibiotics SF2315A and B were determined to be [4aR-(4aβ, 12bβ)] or [4aS-(4aα, 12bα]-4a, 5, 6, 12b-tetrahydro-4a, 8-dihydroxy-3-methylbenz[a]anthracen-1, 7, 12(4H)-trione and [1S-(1β, 4aβ, 6aβ, 12β, 12aα, 12bα)] or [1R-(1α, 4aα, 6aα, 12α, 12aα, 12bα)]-1, 4, 4a, 5, 6, 6a, -12a, 12b-octahydro-1, 4a, 8, 12-tetrahydoxy-3-methyl-6a, 12a-epoxybenz[a]anthracen-7(12H)-one, respectively from their spectroscopic analyses and single crystal X-ray diffraction analyses.

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