19-Oxodeltaline, a norditerpene alkaloid from the aerial part of Delphinium uralense

An overview of the chemical constituents from the genus Delphinium reported in the last four decades

“…Alkaloids 31-38 contain an N-C (19) ]O lactam group, which might be formed by the carbonylation of 19-OH. [33][34][35][36][37] Budelphine (36) from D. buschianum possesses a rare 1,2-epoxy group. 36 There are 12 alkaloids (39)(40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50) with an N-CHO formamide group formed from a C-21 aldehyde.…”