New sulfur-containing acetylenic compounds from Arctium lappa

T Washino, M Yoshikura, S Obata

Index: Washino, Tsutomu; Yoshikura, Masahiro; Obata, Shigeo Agricultural and Biological Chemistry, 1986 , vol. 50, # 1 p. 263 - 270

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Citation Number: 23

Abstract

Nine sulfur-containing acetylenic compounds were isolated and characterized as constituents of Arctium lappa L. The acetylenes named arctinone-a, b (I, II), arctinol-a, b (III, IV), arctinal (V), arctic acid-b, c (VI, VII), methyl arctate-b (VIII) and arctinone-a acetate (IX) were found to be 5′-(1-propynyl)-2, 2′-bithienyl-5-yl derivatives on the basis of chemical and spectroscopic evidence.