Isolation of l-Ephedrine from “Pinelliae Tuber”

Abstract

The basic fractions of methanol and water extracts of a crude drug, “Pinelliae Tuber,” showed a relaxant action and antihistamine like action upon an isolated rectum of Japanese quails. And L-ephedrine hydrochloride was isolated in the yield of 0.002% as the active priniciple. © 1978, The Pharmaceutical Society of Japan. All rights reserved.