17811-32-4Relevant articles and documents
Incorporation of carbon dioxide into phthalides: Via ligand-free copper-catalyzed direct carboxylation of benzoxasiloles
Nguyen, Thanh V. Q.,Rodríguez-Santamaría, José A.,Yoo, Woo-Jin,Kobayashi, Shu
, p. 2501 - 2505 (2017/07/17)
The direct carboxylation of benzoxasiloles with carbon dioxide proceeded smoothly under mild conditions using copper iodide as a catalyst to afford phthalides after an acid work-up. Broad substrate scope and application of this methodology for the synthesis of natural products highlight the synthetic utility of this protocol.
Natural zinniol derivatives from Alternaria tagetica. Isolation, synthesis, and structure-activity correlation.
Gamboa-Angulo, M Marcela,Escalante-Erosa, Fabiola,Garcia-Sosa, Karlina,Alejos-Gonzalez, Fatima,Delgado-Lamas, Guillermo,Pena-Rodriguez, Luis M
, p. 1053 - 1058 (2007/10/03)
Two novel phytotoxins, 8-zinniol methyl ether (5) and 8-zinniol acetate (6), in addition to 6-(3',3'-dimethylallyloxy)-4-methoxy-5-methylphthalide (2), 5-(3',3'-dimethylallyloxy)-7-methoxy-6-methylphthalide (3), and the novel metabolites 8-zinniol 2-(phenyl)ethyl ether (4) and 7-zinniol acetate (7) have been identified as natural zinniol derivatives from the organic crude extract of Alternaria tagetica culture filtrates. Using zinniol as the starting material, phytotoxin 5 was synthesized, together with a number of synthetic intermediates (8-13). Both natural and synthetic zinniol derivatives were evaluated in the leaf-spot bioassay against marigold leaves (Tagetes erecta).
Synthesis based on cyclohexadienes: Part 261 - Total synthesis of some naturally occurring phthalides from Alternaria species
Hariprakasha,Subba Rao
, p. 851 - 856 (2007/10/03)
Total synthesis of the naturally occurring phytotoxic phthalides, silvaticol 7, zinniol 5 and the phthalides 1 and 2, is reported from the substrate 16 derived from the Alder-Rickert reaction of 1-methoxy-2-methyl-3-trimethylsilyloxycyclohexa-1,3-diene 15