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Cycloartanyl acetate

Ozonolysis of 9/5,19-cyclolanostanes has been reported to give good yields of the corresponding 7-ketones. This novel oxidation requires the presence of the cyclopropane ring since lanostanyl acetate is unaffected under the same conditions. Jones oxidation of cycloartanyl acetate gave low yields of both the... [Pg.169]

Polypodium fortunei Loew = Drynaria fortunei J.Sm.) R. Cycloartanyl acetate (773) 367... [Pg.296]

One possible biogenetic pathway to the cucurbitacins is ring opening of a cycloartane precursor. However, as mentioned in the previous section, the chemically-induced protolysis of cycloartanyl acetate cleaves only the C9-C19 bond of the cyclopropane ring. In this connection it is of interest to note that the cycloartane stereoisomer (335) with the three-membered ring in the a orientation undergoes cleavage in the opposite sense (427). [Pg.185]

See other pages where Cycloartanyl acetate is mentioned: [Pg.993]    [Pg.59]    [Pg.87]    [Pg.297]    [Pg.298]    [Pg.993]    [Pg.59]    [Pg.87]    [Pg.297]    [Pg.298]   
See also in sourсe #XX -- [ Pg.87 ]

See also in sourсe #XX -- [ Pg.180 , Pg.185 ]



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