The first tripyrrolic chlorophyll catabolites isolated from Crataegus pinnatifida Bge. var. major brown leaves

摘要

Two diastereoisomers, namely, Crataegus pinnatifida tripyrrolic Chl catabolites or Cp-TCC-1 (1) and Cp-TCC-2 (2), were isolated from the leaves of Crataegus pinnatifida Bge. var. major. Compounds 1 and 2 were identified using spectroscopic methods including HR-ESI-TOF-MS, 1D-NMR, 2D-NMR. A probable biosynthetic pathway to Cp-TCC-1 (1) and Cp-TCC-2 (2) is expounded.