title: Two new sesquiterpene lactones from Montanoa tomentosa ssp. microcephala.
abstract: Two new sesquiterpene lactones: 8alpha-(4'-acetoxymethacryloyloxy)-3alpha,9beta-dihydroxy-1(10)E,4Z,11(13)-germacratrien-12,6alpha-olide (1) and 8alpha-(2'E)-(2'-acetoxymethyl-2'-butenoyloxy)-3alpha,9beta-dihydroxy-1(10)E,4Z,11(13)-germacratrien-12,6alphaolide (2), together with the known zoapatanolide A were isolated from the aerial parts of Montanoa tomentosa Cerv. in La Llave et Lex ssp. microcephala (Sch. Bip. In K. Koch) V.A. Funk (Asteraceae). The structures of all compounds were established on the basis of 1D, 2D NMR, and EIMS analysis.
authors.affiliation: Dipartimento di Chimica Bioorganica e Biofarmacia, Pisa, Italy. braca@farm.unipi.it
authors.forename: A
authors.initials: A
authors.lastname: Braca
authors.forename: G
authors.initials: G
authors.lastname: Cioffi
authors.forename: I
authors.initials: I
authors.lastname: Morelli
authors.forename: F
authors.initials: F
authors.lastname: Venturella
authors.forename: C
authors.initials: C
authors.lastname: Pizza
authors.forename: N
authors.initials: N
authors.lastname: De Tommasi
mesh_terms: D000020:Abortifacient Agents, Nonsteroidal / Q000737:chemistry / Q000302:isolation & purification; D019659:Asteraceae / Q000737:chemistry*; D005260:Female; D006801:Humans; D007783:Lactones / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008519:Medicine, Traditional; D008800:Mexico; D015394:Molecular Structure; D035924:Montanoa; D010082:Oxepins / Q000737:chemistry / Q000302:isolation & purification*; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification*; D045788:Sesquiterpenes, Germacrane
chemical_list: C459216:8alpha-(2'E)-(2'-acetoxymethyl-2'-butenoyloxy)-3alpha,9beta-dihydroxy-1(10)E,4Z,11(13)-germacratrien-12,6alphaolide; C459215:8alpha-(4'-acetoxymethacryloyloxy)-3alpha,9beta-dihydroxy-1(10)E,4Z,11(13)-germacratrien-12,6alpha-olide; D000020:Abortifacient Agents, Nonsteroidal; D007783:Lactones; D010082:Oxepins; D012717:Sesquiterpenes; D045788:Sesquiterpenes, Germacrane