A Ag/P-stereogenic phosphine-complex-catalyzed 1,3-dipolarcycloaddition of azomethine ylides with electron-deficientolefins is reported. In this reaction, highly functionalized pyrrolines with a spiro-quaternary stereogenic center were obtained in good yields (up to 99%) with excellent levels of diastereo- (up to >20:1 dr) and enantioselectivities (up to >99% ee). The chirality of adducts was controlled
small molecules with potential to downregulate the activation of p53 could minimize pathology emerging from anticancer therapies. Acetylation of p53 by the histoneacetyltransferase (HAT) domain is the hallmark of coactivator CREB-binding protein (CBP) epigenetic function. During genotoxic stress, CBP HAT-mediated acetylation is essential for the activation of p53 to transcriptionally govern target genes
s afforded novel spiro-heterocycles chemo-, regio- and stereoselectively in quantitative yields. These compounds were screened for their in vitro activity against Mycobacterium tuberculosis H37Rv (MTB) using agar dilution method. Two compounds, 4-(2,4-dichlorophenyl)-5-phenylpyrrolo(spiro[2.2″]acenaphthene-1″-one)spiro[3.2′]-6′-(2,4-dichlorophenylmethylidene)cyclohexanone (4i) and spiro[5.2″]acena
衍生自啶醌和α-氨基酸的偶氮甲亚胺的1,3-偶极环加成。肌氨酸,苯基甘氨酸,1,3-噻唑烷-4-羧酸和脯氨酸生成一系列2,6-双[(E)-芳基亚甲基]环己酮,可定量定量提供新型螺-杂环化学,区域和立体选择性。使用琼脂稀释法筛选这些化合物对结核分枝杆菌H37Rv(MTB)的体外活性。两种化合物4-(2,4-二氯苯基)-5-苯基吡咯并(螺[2.2“]]-1-1-)螺[3.2']-6'-(2,4-二氯苯基亚甲基)环己酮(4i)和螺[5.2“] ena-1” -onespiro [6.2']-6'-(2,4-二氯苯基亚甲基)环己酮-7-(2,4-二氯苯基)四氢-1 H-吡咯并[1,2- c ] [1,3]噻唑(5i)在体外表现出最大活性,对MTB的MIC值为0.40μg/ mL,分别比乙胺丁醇和吡嗪酰胺强4到15.6倍。
Compound having chiral spirobiindane skeleton and preparation method therefor
申请人:ZHEJIANG JIUZHOU PHARMACEUTICAL CO., LTD.
公开号:US11325875B2
公开(公告)日:2022-05-10
Chiral spirobiindane skeleton compound and preparation method thereof is disclosed in the present invention. The spirobiindane skeleton compound of the present invention having the structure formula of I or I′; the preparation method for synthesizing the spirobiindane skeleton compound of the present invention comprising the following steps: in the presence of solvent and catalysts, the structure formula compound III reacted through intramolecular Friedel-Crafts reaction to obtain the compound of formula I; the catalyst is a Browsteric acidor Lewis acid. The preparation method of chiral fused spirobiindane skeleton compound of the present invention does not need to adopt chiral starting materials or chiral resolving agents, does not require chiral resolving steps, is simple in method, is simple in post-treatment, and is economic and environment friendly. High product yield, high product optical purity and chemical purity. The catalyst for the asymmetric reaction is obtained from the chiral spirobiindane skeleton ligand of the present invention, under the catalytic reagent of transition metal, the catalyzed hydrogenation reaction can arrive at a remarkable catalytic effect with a product yield of >99%, and a product ee value of up to >99%.
[EN] COMPOUND HAVING CHIRAL SPIROBIINDANE SKELETON AND PREPARATION METHOD THEREFOR<br/>[FR] COMPOSÉ PRÉSENTANT UN SQUELETTE SPIROBIINDANE CHIRAL ET SON PROCÉDÉ DE PRÉPARATION<br/>[ZH] 手性螺二氢茚骨架化合物及其制备方法