New solid-supported phosphonate reagents for the synthesis of Z-α,β-unsaturated esters
作者:Sébastien L.X. Martina、Richard J.K. Taylor
DOI:10.1016/j.tetlet.2004.02.138
日期:2004.4
Novel solid-supported phosphonate reagents have been prepared and evaluated for the synthesis of α,β-unsaturated esters with a preference for the Z-alkene. The optimal reagent was a hybrid of both Still–Gennari and Ando reagents, and showed good to high yields and fair to good Z-selectivity for the conversion of both aliphatic and aromatic aldehydes.
(EN) The compound, (E)-(1R,3R)-5-[(R)-11-hydroxy-7,11-dimethyl-dodec-2-enylidene]-cyclohexane-1,3-diol of formula (I) is useful in the treatment or prevention of hyperproliferative skin diseases, particularly psoriasis, basal cell carcinomas, disorders of keratinization and keratosis; or for reversing the conditions associated with photodamage.(FR) L'invention concerne le composé (E)-(1R, 3R)-5-[(R)-11-hydroxy-7,11-diméthyl-dodec-2-énylidène]-cyclohexane-1,3-diol représenté par la formule I et convenant particulièrement au traitement ou à la prévention de maladies hyperprolifératives de la peau, particulièrement le psoriasis, le carcinome basocellulaire, les troubles de la kératinisation ou la kératose ou pour inverser le cours de maladies liées aux effets nocifs du soleil.