期刊
ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS
卷 57, 期 -, 页码 o909-o912出版社
INT UNION CRYSTALLOGRAPHY
DOI: 10.1107/S1600536801014234
关键词
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The structure of the Trp-Ala-derived, non-basic alkaloid cycloechinulin from the mycelial mat of the fungus Aspergillus ochraceus is described; systematic name: (3S)-2,3,8,9-tetrahydro-11-methoxy-3,8,8-trimethylpyrazino[1',2' :1,2]azocino-[5,4-b]indole-1,4-dione-methanol (4/1), C20H21N3O3.0.25-CH4O. There are four independent molecules plus one methanol molecule in the asymmetric unit. The conformations of molecules 1-3 are almost identical, while molecule 4 shows a different conformation in the fused 8-6 ring moiety.
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