A lupane derivative and the 13C NMR chemical shifts of some lupanols from Pleurostylia opposita
作者:Anura P. Dantanarayana、N.Savitri Kumar、P.Mangala Muthukuda、Mohamed I、M. Wazeer
DOI:10.1016/0031-9422(82)83044-6
日期:1982.1
Abstract A newlupane derivative isolated fromPleurostyliaopposita has been assigned the structure 6,β-hydroxy-lup-20(29)-en-3-one, using spectral evidence and chemical interconversions. The 13C NMR spectral assignments of 20-hydroxy-lupan-3-one, 6β, 20-dihydroxy-lupan-3-one, 6β,28-dihydroxy-lup-20(29)-en-3-one and 20-hydroxy-lupane-3, 6-dione previously isolated from the same plant are also reported