Bioactive saponins and glycosides. VIII. Notoginseng (1): new dammarane-type triterpene oligoglycosides, notoginsenosides-A, -B, -C, and -D, from the dried root of Panax notoginseng (Bunk.) F. H. Chen - Yoshikawa,M.; Murakami,T.; Ueno,T.; Yashiro,K.; Hirokawa,N.; Murakami N et,a.l. (Chem Pharm Bull, 1997)