作者:Meselhy R. Meselhy、Shigetoshi Kadota、Koji Tsubono、Masao Hattori、Tsuneo Namba
DOI:10.1016/s0040-4020(01)81108-x
日期:1994.3
The bacterial transformation of shikonin (1) in culture media has been investigated using human intestinal bacteria. Of 24 anaerobes tested, Bacteroides fragilis subsp. thetaotus showed an ability to transform 1 extensively to ten metabolites, five monomers; anhydroalkannin (2), deoxyshikonin (3), cycloshikonin (4), metaboshikonin I (5) and II (6), and five dimers; shikometabolins A (7), B (8), C (9), D (10) and E (11), after anaerobic incubation for 3 days. The structures of these metabolites were determined mainly by 2D-NMR including the INADEQUATE experiment.