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Printzia laxa

Harwickiic acid, the lactone (25), and the acid (26) have been isolated from Printzia laxa (Compositae). Marrubiastrol (27), aldehydomarrubialactone (28), and the 20-nor-8-ketone desmethylmarrubiaketone are three new diterpenoid lactones which were obtained from Leonurus marrubiastrum (Labiatae). Their structures were determined by a combination of H and n.m.r. and X-ray methods. A full paper has appeared describing the structures of floribundic acid. [Pg.165]

Bohlmann, F., and C. Zdero Diterpenes with a new carbon skeleton from Printzia laxa. Phytochem. 17, 487 (1978). [Pg.559]

See other pages where Printzia laxa is mentioned: [Pg.171]    [Pg.171]    [Pg.173]    [Pg.174]    [Pg.175]    [Pg.176]    [Pg.176]    [Pg.171]    [Pg.171]    [Pg.173]    [Pg.174]    [Pg.175]    [Pg.176]    [Pg.176]   
See also in sourсe #XX -- [ Pg.171 , Pg.173 , Pg.174 , Pg.175 , Pg.176 ]



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