Anthraquinone derivatives from Micromonospora rhodorangea.
From the fermentation broths of the actinomycete Micromonospora rhodorangea, four anthraquinone derivatives (1-4) were isolated, of which 2-ethyl-1,8-dihydroxy-3-methyl-anthraquinone (1) and 3,8-dihydroxy-1-propylanthraquinone (3) were determined as new compounds. Their structures were established by using extensive spectroscopic data analyses. 2-ethyl-1-hydroxy-8-methoxy-3-methyl anthraquinone (2) was isolated from actinomycetes for the first time and its NMR data was assigned.
State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100083, People's Republic of China.
Chun-Mei
CM
Xue
Li
L
Tian
Wen-Han
WH
Lin
Zhi-Wei
ZW
Deng
D000880:Anthraquinones / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008847:Micromonospora / Q000737:chemistry*; D015394:Molecular Structure
D000880:Anthraquinones