7 Amaromycinの構造について
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From the fermentation broth of Streptomyces venezuelae MCRL 0376 separated macrolide antibiotics, pikromycin (amaro-mycin), narbomycin, pikronolide, and narbonolide. NMR and CD studies of these macrolides and their aglycones suggested the conformation of macrolactones. Carbonyl group at C_9-position of pikromycin, acetyl pikromycin, and pikronolide showed a cisoid relationship between double bond at C_<10>-position. On the other hand, transoid relationship between the double bond and the carbonyl group was considered for narbomycin, narbonolide, diacetyl pikromycin, and kromycin (aglycone I of amaromycin). Stereochemistry of carbonyl group at C_3-position of pikromycin should be have two type A and B in the different solvent.
- 天然有機化合物討論会の論文
- 1972-10-01
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- 7 Amaromycinの構造について