作者:Yoshihisa Takaishi、Yoshito Murakami、Minoru Uda、Takashi Ohashi、Noriko Hamamura、Masaru Kidota、Shigetosi Kadota
DOI:10.1016/s0031-9422(97)00066-6
日期:1997.7
The new hydroxyphenylazoformamide derivatives, 4-hydroxyphenyl-1-azoformamide, 4-hydroxyphenyl-1-ONN-azoformamide and 2-methylsulfonyl-4-hydroxy-6-methylthiophenyl-1-azoformamide, which we named craniformin, as well as three known related compounds, 4-methoxyphenyl-1-azoformamide, 4-methoxyphenyl-1-ONN-azoformamide and 2-methylsulfinyl-4-hydroxy-6-methylthiophenyl-1-azoformamide (phenolic tautomer of rubroflavin), and three known steroids, ergosta-4,6,8(14), 22-tetraene-3-one, ergosta-7, 22-diene-3-ol and ergosterol peroxide were isolated from Calvatia craniformis. Structure of the compounds was established by chemical and spectroscopic means, including X-ray analysis. (C) 1997 Elsevier Science Ltd. All rights reserved.