지유의 수치에 관한 연구 -볶은 지유로부터 분리된 토멘토솔린산

Some traditional herbal drugs have been used after processing to modify its activities. For example, roasted 'chiyu'(Sanguisorbae radix) has been used as antihemorrhagics while raw one used as anti-emetics. The composition of herbal drug is expected to be changed during this process. We tried to reveal the compositional difference between raw and roasted 'chiyu', and isolated a compound which is not present in raw one but in processed one. The structure of the isolated compound was elucidated as tomentosolic acid. The content of tomentosolic acid in roasted 'chiyu' was approximately 0.05%.