Chemical Constituents of Pittosporum glabratum

AimTo investigate the chemical constituents of Pittosporum glabratum Lindl‥MethodsThe compounds were isolated and purified by repeated column chromatography and preparative HPLC. The structures were elucidated on the basis of spectroscopic analyses and physical evidence.ResultsSeven compounds were isolated and identified as 6α-hydroxygeniposide (1), 10-O-caffeoyl deacetyl daphylloside (2), (+)-lyoniresinol-3α-O-β-D-glucopyranoside (3), (+)-lyoniresinol-3α-O-(6″-3,5-dimethoxy- 4-hydroxybenzoyl)-β-D-glucopyranoside (4), fernandoside [(+)-lyoniresinol-3α-O-(6″-3-methoxy-4-hydroxybenzoyl)-β-D-glucopyranoside] (5), (−)-4-epi-lyoniresinol-3α-O-β-D-glucopyranoside (6) and liriodendrin [(+)-syringaresinol-4,4′-bis-O-β-D-glucopyranoside] (7).ConclusionCompounds 1-6 were found in the genus Pittosporum for the first time and 7 was isolated from the plant Pittosporum glabratum for the first time.