Phytochemistry p. 1681 - 1684 (1985)
Update date:2022-08-17
Topics:
Mitscher, Lester A.
Gollapudi, Sitaraghav R.
Oburn, David S.
Drake, Steven
Two new antimicrobial dimethylbenzisochromans were isolated from the roots of Karwinskia humboldtiana together with the known 7-acetyl-6,8-dimethoxy-3-methyl-1-naphthol.The structures and absolute configurations were determined by spectroscopic examination and by chemical transformation to the known quinones eleutherin and 7-methoxyeleutherin.Key Word Index - Karwinskia humboldtiana; Rhamnaceae; karwinaphthol A and B; 2-acetyl-6,8-dimethoxy-3-methyl-1-naphthol; eleutherin and 7-methoxyeleutherin; antimicrobial activity.
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