Abstract
Further chemical examination of the bark and the leaves of Mallotus japonicus (THUNB.) MUELLER-ARG. (Euphorbiaceae) has led to the isolation of two new tannins [named mallotannins A (16) and B (18)]. Based on chemical and spectroscopic evidence, the structures of 16 and 18 were established to be dimeric hydrolyzable tannins in which the free carboxylic acid in mallotinic acid is connected to the C-6 position of bergenin and D-glucose, respectively. On the other hand, fifteen known tannins and related compounds have been isolated from the leaves of M. philippinensis (LAM.) MUELLER-ARG. and identified by comparisons of their physical and spectral data with those of authentic samples. In addition, a survey of tannin patterns in Mallotus species is presented.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
