A novel enantioselective organocatalytic strategy is presented for the synthesis of tetrahydrofurobenzofuran and methanobenzodioxepine naturalproductcorestructures. The strategy is based on a pair of divergent reaction pathways in which hydroxyarenes react with γ‐keto‐α,β‐unsaturated aldehydes, catalyzed by a chiral secondary amine. One reaction pathway, which leads to chiral 5,5‐fused acetals with
A method for preparing analogues of C1,C24-dihydroxy-vitamin D is disclosed. Especially the method for preparing calcipotriol and tacalcitol from a starting material of Vitamin D2 is disclosed here. Calcipotriol (compound 1(a)) and tacalcitol (compound 1(b)) can be synthesized by the method of the present invention. Moreover, only nine steps are needed for the synthesis of calcipotriol using the method. Likewise, only ten steps are needed for the synthesis of tacalcitol by the present method. Hence, the present method, with less process steps and higher yields, represents an improvement over the conventional methods.
HISTONE ACETYLTRANSFERASE (HAT) INHIBITOR AND USE THEREOF
申请人:Shanghai Institute of Materia Medica,
Chinese Academy of Sciences
公开号:EP3782995A1
公开(公告)日:2021-02-24
The present invention relates to a histone acetyltransferase (HAT) inhibitor. Provided are a compound represented by general formula I, a pharmaceutically acceptable salt, a stereoisomer, an enantiomer, a diastereomer, an atropisomer, a racemate, a polymorph, a solvate or an isotope-labeled compound (including deuterium substitution) thereof, a preparation method therefor, a pharmaceutical composition comprising the same, and use thereof in the treatment of various HAT-related diseases or conditions.
selective, potent small-molecule inhibitors of p300/CBP histoneacetyltransferases (HAT) with desired druglike properties, exemplified by B026. Our data demonstrated that B026, with half maximal inhibitory concentration (IC50) values of 1.8 nM to p300 and 9.5 nM to CBP enzyme inhibitory activity, is the most potent, selective p300/CBP HATinhibitor. Moreover, B026 achieves significant and dose-dependent tumor
Enantioselective conjugate addition of aliphatic thiols to divergently activated electron poor alkenes and dienes
作者:Rafał Kowalczyk、Aleksandra J. Wierzba、Przemysław J. Boratyński、Julia Bąkowicz
DOI:10.1016/j.tet.2014.06.035
日期:2014.9
Divergently activated double bonds in electron poor 4-oxo-butenoates and (2E,4E)-6-oxo-2,4-dienoates underwent stereoselective and regioselective addition of mercaptans catalyzed by simple Cinchona alkaloids. Application of quinine and quinidine afforded both enantiomers of the 1,4-adducts with respect to the ketone carbonyl group in ees of up to 80%. Single recrystallization of some adducts resulted