Journal
CHEMICAL & PHARMACEUTICAL BULLETIN
Volume 57, Issue 10, Pages 1113-1118Publisher
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/cpb.57.1113
Keywords
Psorospermum febrifugum; Psorospermum adamauense; quinone; antimicrobial test
Funding
- TWAS, The Academy of Sciences
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Febrifuquinone (1), a new vismione-anthraquinone coupled pigment and a new bianthrone named adamabianthrone (2), were isolated respectively, from the roots of Psorospermum febrifugum and from the bark of Psorospermum adamauense along with eight known compounds including: two bianthrones [(bianthrone A(1) (3) and bianthrone A(2b)], one vismione [(vismione D (4)], one anthrone (3-geranyloxyemodin anthrone) and four anthraquinones [(1,8-dihydroxy-3-isoprenyloxy-6-methylanthraquinone, emodin (5), 3-geranyloxy-1,8-dihydroxy-6-methylanthraquinone and 2-geranyl-1,8-dihydroxy-6-methylanthraquinone]. Their structures were determined using modern spectroscopic methods including one and two dimensional-NMR techniques as well as MS. Compounds 1 and 2 showed significant antimicrobial activities against a wide range of bacteria and fungi.
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