Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

8a-Acetoxyzaluzanin

Two new guaianolides, 8a-acetoxyzaluzanin C (426) and 8a-acetoxy-zaluzanin D (427) have been isolated from the female thallus of Conocephalum conicum and sterile thallus of Wiesnerella denudata, together with the previously known zaluzanin C (424) and zaluzanin D (425) (25,40). [Pg.69]

Ac20/Py 2) CrOs-Py 3) K2C03/MeOH 4) CrOa-Py Scheme 51. Reactions of 8a-acetoxyzaluzanin C and 8a-acetoxyzaluzanin D... [Pg.71]

Acetylation of (426) gave 8a-acetoxyzaluzanin D (427), indicating that (426) was 3p-hydroxy-8a-acetoxy or 3P-acetoxy-8a-hydroxy-6,12-olide (Scheme 51). The location of the hydroxyl group at C-3 was established by production of an a,p-unsaturated cyclopentenone (432) from (426) by oxidation with Cr03-Py. [Pg.71]

See other pages where 8a-Acetoxyzaluzanin is mentioned: [Pg.416]    [Pg.544]    [Pg.552]    [Pg.70]    [Pg.70]    [Pg.110]    [Pg.208]    [Pg.209]    [Pg.233]    [Pg.233]    [Pg.416]    [Pg.544]    [Pg.552]    [Pg.70]    [Pg.70]    [Pg.110]    [Pg.208]    [Pg.209]    [Pg.233]    [Pg.233]   
See also in sourсe #XX -- [ Pg.69 , Pg.70 , Pg.71 , Pg.110 , Pg.208 , Pg.209 , Pg.233 ]



SEARCH



© 2024 chempedia.info