Neocrocin A: A novel crocetin glycoside with a unique system for binding sugars isolated from gardenia yellow

Abstract

A novel crocetin glycosyl ester, neocrocin A (2), was isolated from gardenia yellow. The structure of 2 was elucidated as that of an all-trans-crocetin β-D-gentiobiosyl β-D-glucopyranosyl-(1→6)-D-2- deoxy-glucopyranos-2-yl diester based on chemical and spectral data. The findings provide evidence that the binding system of crocetin glycosides is not limited to the anomeric position. © 2007 Pharmaceutical Society of Japan.