The structures (Chart 1) of chaetoglobosins C, E, F, G, and J, 10-(indol-3-yl)-[13] cytochalasans, were established on the basis of physical data, especially 1H-NMR, and chemical correlations. The stereo-structural features of chaetoglobosins are discussed.
The structures (Chart 7) of chaetoglobosins A, B, and D, 10-(indol-3-yl)-[13] cytochalasans, were elucidated by isomerization reactions and physical method including precise 1H-NMR decoupling experiments.
19-O-Acetylchaetoglobosin B and 19-O-Acetylchaetoglobosin D, Two New Metabolites ofChaetomium globosum
作者:Alessandro Probst、Christoph Tamm
DOI:10.1002/hlca.19810640710
日期:1981.11.4
Twonewmetabolites have been isolated from cultures of Chaetomium globosum. The structures of 19-O-acetylchaetoglobosinB (4) and 19-O-acetylchaetoglobosinD (5) are assigned. The 13C-NMR. spectra of chaetoglobosin A (1), 19-O-acetylchaetoglobosin A (2), chaetoglobosin C (3), 19-O-acetylchaetoglobosinB (4), 19-O-acetylchaetoglobosinD (5) and of cytochalasin G (6), a (3-indolyl)-[11]cytochalasan