... of 2,5-Dimethyl—3—arylpyrrole2) SUMINORI UMIO, KAZUO KARIYONE, KUNIHIB'O TANAKA and IKUO UEDA Research Laboratom'es, Fujisuwa Pharmaceutical Co., Ltd ... (Tokyo), 17, 2) A part of this work was presented at the 9th Symposium of the Chemistry of Natural ... 610 Vol. ...