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Communication | Regular issue | Vol 20, No. 10, 1983, pp.1953-1956
Published online, 1st January, 1970
DOI: 10.3987/R-1983-10-1953
Structure of Mahuannin D, a Hypotensive Pronciple of Ephedra Roots

Yoshimasa Kasahara and Hiroshi Hikino

*Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan


From the crude drug “mao-kon”, the roots of Ephedra plants, a new flavano-flavanol, mahuannin D, exhibiting the hypotensive activity has been isolated. The stereostructure of mahuannin D has been determined as represented by formula I based on chemical and physical evidence.