Three new cyanoglycosides named hydracyanosides D (1), E (2), and F (3) were isolated from the leaves of Hydrangea macrophylla cultivated in China together with 17 known constituents including hydracyanoside A (4). Their structures were elucidated on the basis of chemical and physicochemical evidence.
Purdy, John Richard; Hamilton, Raymond G.; Akhter, Lalarukh, Canadian Journal of Chemistry, 1981, vol. 59, p. 210 - 214
作者:Purdy, John Richard、Hamilton, Raymond G.、Akhter, Lalarukh、McLean, Stewart
DOI:——
日期:——
Formation of trioxadamantane type aglucones of 3-methoxy secologanin derivatives
Acidic transformation of some 3,4-dihydro-3-substituted secologaninderivatives produced trioxadamantane typecompounds. The formation of the bridged tricyclic products from monocyclic educts is interpreted as multistep hydrolysis and transacetalation accompanied by deglucosylation.