摘要:
From leaves of Myrsine seguinii, seven hydroquinone glycosides were isolated. By spectroscopic analyses, their structures were elucidated to be arbutin, arbutin 2'- and 6'-O-beta-apiofuranosides (seguinosides A and B, respectively), and the benzoyl, p-hydroxybenzoyl, 3-methoxy-4-hydroxybenzoyl and 3,5-dimethoxy-4-hydroxybenzoyl esters of the alcohol hydroxyl group on C-5 " of arbutin 2'-O-beta-apiofuranoside (seguinosides C-F, respectively). (C) 1998 Elsevier Science Ltd. All rights reserved.