Pyxine endochrysina Pyxinol

In addition to diacetylpyxinol (501), Yosioka, Yamauchi, and Kitagawa 345) have identified three new dammarane triterpenoids from Pyxine endochrysina pyxinol (502), 3-0-acetylpyxinol (503) and 12-desoxydiacetylpyxinol (504). [Pg.211]

Deriv Pyxinol, needles (MeOH-HjO), mp 225-226 °C, [a]j3 + 62.8 (CHCI3, c 0.99), by saponification of diacetylpyxinol with KOH-MeOH StL Pyxine endochrysina Nyl. [Pg.374]

Leucotylic acid (98), phlebic acid A (99), and phlebic acid B (100) are hopane derivatives with a 23-carboxylic acid from Parmelia leucotyliza yl., P. entotheiochroa Hue, and Peltigera aphthosa (L.) Willd. Diacetyl pyxinol (101), known from Pyxine endochrysina yX., possesses adammaran skeleton from X-ray analysis of 3/3, 12/3-di-/ -bromobenzoyl pyxinol. [Pg.515]

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