Structural and spectral assignments of six anthraquinone derivatives from the mangrove fungus (ZSUH-36).
A new natural product named 6,8,1'-tri-O-methyl averantin (1) has been isolated together with five known anthraquinones 1'-O-methyl averantin (2), 6,8-di-O-methyl averufin (3) averufin (4), versicolorin C (5) and 6,8-di-O-methyl averufanin (6) from a mangrove endophytic fungus ZSUH-36 collected from the South China Sea. NMR techniques including COSY, HMQC, and HMBC were used to elucidate the structures of these compounds. We report the unambiguous assignments of the (1)H and (13)C NMR spectra of the new compound 6,8,1'-tri-O-methyl averantin(1).
Shao
Changlun
C
School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, PR China.
Wang
Changyun
C
Wei
Meiyan
M
Li
Shangde
S
She
Zhigang
Z
Gu
Yucheng
Y
Lin
Yongcheng
Y
D000880:Anthraquinones / Q000737:chemistry* / Q000302:isolation & purification; D001203:Ascomycota / Q000737:chemistry*; D002247:Carbon Isotopes; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards*; D015394:Molecular Structure; D011522:Protons; D012015:Reference Standards; D013237:Stereoisomerism
D000880:Anthraquinones; D002247:Carbon Isotopes; D011522:Protons