title: Secoiridoid glycoside and alkaloid constituents of Hydrangea chinensis.
abstract: A new secoiridoid glycoside, hydrachoside A (1), along with 14 known compounds, was isolated from the leaves of Hydrangea chinensis. The absolute stereochemistry of the side chain attached to C-15 on the secoiridoid glycoside hydrangenoside E (2) was determined by NMR spectral analysis. The structures of compounds 1 and 2 were elucidated on the basis of spectral data. The previously reported structure, hydrachine A (3), was revised as its epimer, (-)-neodichroine (4), a new compound.
mesh_terms: D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D031966:Hydrangea / Q000737:chemistry*; D039823:Iridoids / Q000737:chemistry / Q000302:isolation & purification*; D008519:Medicine, Traditional; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000470:Alkaloids; D004365:Drugs, Chinese Herbal; D039823:Iridoids; C435584:hydrachine A; C482161:hydrachoside A; C482162:hydrangenoside E