Structural Reassignment of <i>rel</i>-(3′<i>Z</i>,3<i>R</i>,6<i>R</i>,7<i>R</i>,3a′<i>R</i>,6′<i>R</i>)-3,8-Dihydrodiligustilide and the Activity of Diligustilide and 3,8-Dihydro- and 3,8,7′,7a′-Tetrahydrodiligustilides as Progestins
作者:José Luis Ávila、Ericka K. P. Almeida-Aguirre、Carlos A. Méndez-Cuesta、Rubén A. Toscano、Marco A. Cerbón Cervantes、Guillermo Delgado
DOI:10.1021/acs.orglett.9b02762
日期:2019.9.20
isolated from Ligusticum chuanxiong, the structure of which was earlier assigned to a semisynthetic product with nonidentical spectroscopic constants. The structure of this natural phthalide was reassigned with a proposal of its absoluteconfiguration. Phthalides acted as progestins in cell viability assays, immunofluorescence microscopy, and docking analysis. Therefore, the structures for natural and semisynthetic
Treatment of diligustilide (1) with base afforded the pentacyclic compounds 2 – 4 with novel carbon-carbon connectivities via lactone-ring opening, intramolecularcondensations and competitive equilibrations. This reaction provides a useful entry to modified dimeric phthalides.
Secondary Metabolites from the Roots of Ligusticum porteri (Umbelliferae). X-Ray Structure of Z-6.6',7.3a'-Diligustilide
作者:Guillermo Delgado、Rosa G. Reza-Gardu撲、Rub始 A. Toscano、Robert Bye、Edelmira Linares
DOI:10.3987/com-87-4476
日期:——
(, ′) diligustilide, nouveau phtalide dimere isole de Franch.
作者:Mourad Kaouadji、Henri Reutenauer、Albert J. Chulia、Alain Marsura
DOI:10.1016/s0040-4039(00)86225-5
日期:1983.1
Chemical reactivity of phthalides. Relay synthesis of diligustilide, Rel-(3′R)-3′,8′-dihydrodiligustilide and wallichilide
作者:María Yolanda Rios、Guillermo Delgado、Rubén A Toscano
DOI:10.1016/s0040-4020(98)00080-5
日期:1998.4
DielsAlder reaction using Z-ligustilide (3) both as diene and dienophile afforded the natural product diligustilide (1). The relay synthesis of 5 from 1 (via situ-selective lactone ring opening, reduction with NaBH4/MeOH and lactonization with SOCl2/THF) was achieved and confirmed the revised structure of 5, a secondary constituent of Ligusticum wallichii. The natural substance wallichilide (8) was