Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Communication | Regular issue | Vol 20, No. 9, 1983, pp.1741-1744
Published online, 1st January, 1970
DOI: 10.3987/R-1983-09-1741
Structure of Mahuannin C, a Hypotensive Principle of Ephedra Roots

Yoshimasa Kasahara, Nobuyoshi Shinomiya, Chohachi Konno, and Hiroshi Hikino

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


A new bisflavanol, mahuannin C, showing the hypotensive activity has been isolated from the crude drug “mao-kon”, the roots of Ephedra plants. The stereostructure of mahuannin C has been deduced as shown in formula I on the basis of chemical and physical evidence.