title: Juspurpurin, an unusual secolignan glycoside from Justicia purpurea.
abstract: An unusual secolignan glycoside, juspurpurin (1), and a new arylnaphthalene glycoside, justalakonin (2), together with eight known lignans were isolated from the whole plants of Justicia purpurea. Compound 1 is the first glycoside of a rare group of secolignans. The structures of the new compounds 1 and 2 were established using 1D and 2D NMR ((1)H-(1)H COSY, HMQC, and HMBC) spectral data and by chemical transformations.
authors.affiliation: Department of Chemistry, Sri Venkateswara University, Tirupati-517 502, India.
authors.forename: Jakka
authors.initials: J
authors.lastname: Kavitha
authors.forename: Kovuru
authors.initials: K
authors.lastname: Gopalaiah
authors.forename: Dodda
authors.initials: D
authors.lastname: Rajasekhar
authors.forename: Gottumukkala V
authors.initials: GV
authors.lastname: Subbaraju
mesh_terms: D027901:Acanthaceae / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D006868:Hydrolysis; D007194:India; D017705:Lignans / Q000737:chemistry / Q000302:isolation & purification*; D008745:Methylation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*
chemical_list: D006027:Glycosides; D017705:Lignans; C479847:juspurpurin