A conjunctive diiodoheptaene for the synthesis of C2-symmetric carotenoids
作者:Noelia Fontán、Belén Vaz、Rosana Álvarez、Ángel R. de Lera
DOI:10.1039/c3cc38676g
日期:——
(2E,4E,6E,8E,10E,12E,14E)-2,15-Diiodo-6,11-dimethylhexadeca-2,4,6,8,10,12,14-heptaene, prepared by homometathesis, has been used in palladium-catalyzed Suzuki and Stille cross-coupling reactions with the appropriate partners to construct the C2-symmetric carotenoids β,β-carotene, lycopene, synechoxanthin and 4,4′-diapo-ψ,ψ-carotene-4,4′-dial.
A comprehensive survey of stille-type Csp2-Csp2 single bond forming processes in the synthesis of retinoic acid and analogs
作者:Beatriz Domínguez、Beatriz Iglesias、Angel R. de Lera
DOI:10.1016/s0040-4020(99)00962-x
日期:1999.12
coupling for the formation of the side-chain single bonds. On employing the experimental catalytic conditions developed by Farina [Pd2(dba)3, AsPh3, NMP] we have modified the electronic and steric requirement of the coupling parters, alkenyl stannanes and electrophiles (alkenyl iodides and triflates). The comprehensive survey afforded appropriately matched components for every bond formation considered.
A Modular Approach for the Synthesis of Natural and Artificial Terpenoids
作者:Weiyi Wang、Dongyu Huang、Yibo Yu、Hui Qian、Shengming Ma
DOI:10.1002/anie.202307626
日期:2023.9.11
A robust chem-stamp approach consisting of two steps, one-carbon extension of aldehydes to alkenyl boronates and the rhodium-catalyzed reaction of these alkenyl boronates with 2,3-allenols, has been developed for the construction of key isoprene units in terpenoids. This approach enables the modular concise synthesis of terpenoids and the creation of artificial terpenoids with control over the number
[EN] TOTAL SYNTHESIS METHOD FOR VITAMIN A, DERIVATIVE AND DEUTERATED COMPOUND THEREOF<br/>[FR] PROCÉDÉ DE SYNTHÈSE TOTALE DE VITAMINE A, DÉRIVÉ ET COMPOSÉ DEUTÉRÉ DE CELLE-CI<br/>[ZH] 一种维生素A及其衍生物与其氘代化合物的全合成方法