Isaka M, Kongsaeree P, Thebtaranonth Y
National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency, Bangkok, Thailand.
J Antibiot (Tokyo). 2001 Jan;54(1):36-43. doi: 10.7164/antibiotics.54.36.
Structures of eleven bioxanthracenes (1 approximately 11) and two monomers (12 and 13), isolated from the insect pathogenic fungus Cordyceps pseudomilitaris BCC 1620, were elucidated. The structure, including the axial stereochemistry, of one of the major symmetrical dimers (1) was determined by X-ray crystallographic analysis, while the stereochemistries of the other isomers were deduced by chemical conversions and spectroscopic means.
从昆虫病原真菌蛹虫草BCC 1620中分离出11种生物蒽醌(1至11)和两种单体(12和13),并对其结构进行了阐明。其中一种主要对称二聚体(1)的结构,包括轴向立体化学,通过X射线晶体学分析确定,而其他异构体的立体化学则通过化学转化和光谱手段推导得出。