Triterpenoids from the bark of Ruptiliocarpon caracolito.
Five spirocaracolitone triterpenoids were isolated from the dichloromethane-soluble fraction of the bark of Ruptiliocarpon caracolito, and their structures were determined mainly by application of 1D and 2D NMR spectroscopy. Two known CD-spirotriterpenoids were also isolated from the same source. This brings the total number of known CD-spirotriterpenoids from this source to 17. The discovery of such a large number of closely-related compounds in a single species represents an excellent example of phytochemical redundancy as a defense mechanism.
Asim
Muhammad
M
Department of Chemistry, 10 Marie-Curie, Ottawa, ON, Canada K1N 6N5.
Hussien
Helmi
H
Poveda
Luis
L
Arnason
John Thor
JT
Durst
Tony
T
D029753:Celastraceae / Q000737:chemistry*; D003364:Costa Rica; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D024301:Plant Bark / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
D014315:Triterpenes