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Betula ermanii

Acerogenin E Acer nikoense (A) Betula ermanii (Be) Betula platyphylla var. japonica (Be) Betula maximowicziana (Be) Betula davurica (Be) 33 34 9 35 32... [Pg.895]

Dammaranes oxygenated at C-11 are a rarity. Two new examples are (205,24/ )-epoxydammarane-3/3,lla,25-triol (37) and the corresponding acetate (38) from the leaves of Betula ermanii. A molecular ion is not normally seen in the mass spectra of compounds such as (205)-protopanaxatriol (39). Chemical ionization mass spectra using ammonia or isobutane as the carrier have (M + H)" ions as... [Pg.115]

See other pages where Betula ermanii is mentioned: [Pg.142]    [Pg.91]    [Pg.142]    [Pg.91]   
See also in sourсe #XX -- [ Pg.26 , Pg.895 ]

See also in sourсe #XX -- [ Pg.895 ]



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