[EN] PROCESS FOR PRODUCING OPTICALLY ACTIVE 2-ALKOXY-1-(TRIFLUOROMETHYL-SUBSTITUTED PHENYL)ETHANOL DERIVATIVES [FR] PROCEDE DE PRODUCTION DE DERIVES 2-ALKOXY-1-(PHENYLE A SUBSTITUTION TRIFLUOROMETHYLE)ETHANOL OPTIQUEMENT ACTIFS
[DE] VERFAHREN ZUR HERSTELLUNG CHIRALER SUBSTITUIERTER DIOLE UND DIOLANALOGER DERIVATE [EN] METHOD FOR PRODUCING SUBSTITUTED SHIRAL DIOLS AND DIOL-ANALOGOUS DERIVATIVES [FR] PROCEDE DE FABRICATION DE DIOLES CHIRALES SUBSTITUEES ET DE DERIVES ANALOGUES DE DIOLES
摘要:
制备手性取代二醇及其衍生物的方法,其中化合物的结构如下(I),其中 R 代表 H 或者一个可能取代的 C5-C20-芳基、C5-C20-杂环烷基或Cl-C20-烷基基团,R1 代表一个可能取代的 C5-C20-芳基、C5-C20-杂环烷基或Cl-C20-烷基基团,R2 代表 H、一个可能取代的 Cl-C20-烷基、C3-C7-杂环基、硅基、C5-C20-芳基、C5-C20-芳基磺酰基或Cl-C20-烷基磺酰基基团,R3 可以是 H 或者一个 O-保护基,X 代表氧、硫、氮或磷,其中a) 手性羟基羧酸或羟基羧酸酯(II),其中 R4 代表 H 或者一个 Cl-C6-烷基,与一个 O-保护基化合物反应形成化合物(III),其中 R3 代表 O-保护基,然后b) 用碱金属硼或铝氢化物还原为化合物(IV),然后c) 可能激活氧原子并通过含有硫、氮或磷的基团交换,或者d) 通过与烷基化或芳基化试剂反应转化为化合物(V),其中 R′2 代表一个可能取代的 C1-C20-烷基、C3-C7-杂环基、硅基、C5-C20-芳基、C5-C20-芳基磺酰基或C1-C20-烷基磺酰基基团,R3 代表 O-保护基,然后e) 在步骤 b)、c) 或 d) 后,可能去除 O-保护基。
There is provided amino acid derivatives of formula I,
1
wherein p, q, R
1
, R
2
, R
3
, R
4
, Y, n and B have meanings given in the description which are useful as competitive inhibitors of trypsin-like proteases, such as thrombin, and in particular in the treatment of conditions where inhibition of thrombin is required (e.g. thrombosis) or as anticoagulants.
Detours in the Development of the Organocatalytic Diels‐Alder Reactions of Vinylboronic Compounds. A Dead End?
作者:Juan M. Ramos Marchena、Gustavo O. Terrestre、Sebastián O. Simonetti、Silvina C. Pellegrinet
DOI:10.1002/ejoc.202201307
日期:2023.2.17
Theoretical and experimental studies were performed to further optimize the organocatalyticDiels-Alderreaction of vinylboronic compounds. Although the yields and the stereoselectivities could not be improved much, a simpler procedure is described. In addition, a deeper knowledge into the reaction mechanism has been achieved, particularly on the substituent effect of the catalyst and the ligand exchange
Glyoxalase-based toolbox for the enantioselective synthesis of α-hydroxy carboxylic acids
作者:Mussa Yedigenov、Niyaz Amire、Aizat Abdirassil、Tomiris Mulikova、Azamat Begenov、Anniina Kiesilä、Anatoly A. Peshkov、Vsevolod A. Peshkov、Darkhan Utepbergenov
DOI:10.1039/d3ob02098c
日期:——
highly enantioselective synthesis of L-α-hydroxy carboxylic acids (L-αHCAs) via enzymatic intramolecular Cannizzaro reaction of (hetero)aryl glyoxals in the presence of glutathione-independent human glyoxalase DJ-1. Combined with the optimized synthesis of D-αHCAs using glyoxalases I and II, this approach offers a general, scalable and operationally simple access to bothenantiomers of α-hydroxy acids in
我们报道了在不依赖谷胱甘肽的人乙二醛酶 DJ-1 存在下,通过(杂)芳基乙二醛的酶促分子内 Cannizzaro 反应高度对映选择性合成L -α-羟基羧酸 ( L -αHCAs)。结合使用乙二醛酶 I 和 II 的D -αHCAs 优化合成,该方法提供了一种通用的、可扩展的且操作简单的方法,以中等至优异的产率和一致的高对映选择性获得 α-羟基酸的两种对映体。
METHOD FOR PRODUCTION OF OPTICALLY ACTIVE -HYDROXYCARBOXYLIC ACID
申请人:Daiichi Fine Chemical Co., Ltd.
公开号:EP1930441A1
公开(公告)日:2008-06-11
An efficient method for producing an optically active α -hydroxycarboxylic acid represented by the following general formula (I) [A represents a residue of a 5- or 6-membered cyclic compound, * indicates a carbon atom in the S- or R-configuration, X represents hydrogen atom or an alkyl group having 1 to 4 carbon atoms], which comprises the step of treating a corresponding ester compound (not optically pure) with cell bodies or a culture, or a processed product or an extract thereof of a microorganism of the genus Leifsonia, genus Cylindrocarpon, genus Verticillium, or the like.
A porous chiral material of formula [M(L)1.5(A)]+X− wherein M is a metal ion; L is a nitrogen-containing bidentate ligand; A is the anion of mandelic acid or a related acid; and X− is an anion.
一种式为[M(L)1.5(A)]+X-的多孔手性材料,其中 M 是金属离子;L 是含氮双齿配体;A 是扁桃酸或相关酸的阴离子;X- 是阴离子。