Guttiferic acid, a novel rearrangement product from minor chromenoxanthone pigments ofGarcinia morella Desr.
作者:D. Rajagopal Rao、K. N. Gurudutt、S. Mamatha、L. J. Mohan Rao
DOI:10.1002/mrc.2011
日期:2007.7
Morellic and isomorellic acids (2 and 3), present in the seed coat as well as resinous exudate of Garciniamorella Desr., are geometric isomers and structurally related to morellin (1), the major chromenoxanthone pigment. Both form crystalline complexes with pyridine and afford guttiferic acid (7), a novel skeletal rearrangement product, when heated with mild alkali. Structure of the latter has been