title: Unexpected secoiridoid glucosides from Manulea corymbosa.
abstract: From an extract of Manulea corymbosa were isolated four known secoiridoid glucosides (1-4), 10 new monoterpenoid esters of secologanol, namely, manuleosides A-I (5-11, 13, and 14) and dimethyl rhodanthoside A (12), and four new phenylpropanoid esters of carbocyclic iridoid glucosides, manucorymbosides I-IV (15-18). Also, the caffeoyl phenylethanoid glycoside verbascoside was isolated. The presence of secoiridoids apparently derived from loganic acid in the family Scrophulariaceae is unprecedented and greatly unexpected.
authors: Department of Chemistry, Technical University of Denmark , DK-2800, Lyngby, Denmark.
authors: Chrysoula
authors: C
authors: Gousiadou
authors: Tetsuo
authors: T
authors: Kokubun
authors: Charlotte H
authors: CH
authors: Gotfredsen
authors: Søren R
authors: SR
authors: Jensen
mesh_terms: D004952:Esters; D057888:Iridoid Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D039821:Monoterpenes / Q000737:chemistry / Q000302:isolation & purification*; D019906:Nuclear Magnetic Resonance, Biomolecular; D028083:Scrophulariaceae / Q000737:chemistry*; D013019:South Africa
chemical_list: D004952:Esters; D057888:Iridoid Glucosides; D039821:Monoterpenes