Palladium-Catalyzed Nondirected Late-Stage C–H Deuteration of Arenes
作者:Mirxan Farizyan、Arup Mondal、Sourjya Mal、Fritz Deufel、Manuel van Gemmeren
DOI:10.1021/jacs.1c08233
日期:2021.10.13
We describe a palladium-catalyzed nondirected late-stage deuteration of arenes. Key aspects include the use of D2O as a convenient and easily available deuterium source and the discovery of highly active N,N-bidentate ligands containing an N-acylsulfonamide group. The reported protocol enables high degrees of deuterium incorporation via a reversible C–Hactivation step and features extraordinary functional
A 1,4-substituted cyclic amine derivative represented by the following formula or a pharmacologically acceptable salt thereof:
1
wherein A, B, C, D, T, Y, and Z each represent a methine or a nitrogen linkage; R
1
, R
2
, R
3
, R
4
, and R
5
each represent a substituent; n represents 0 or an integer of 1 to 3; m represents 0 or an integer of 1 to 6; and p represents an integer of 1 to 3. The compounds have serotonin antagonism. They are therefore clinically useful as medicaments, in particular, for treating, ameliorating, and preventing spastic paralysis. They are also useful as central muscle relaxants for ameliorating myotonia.
Synthesis of thyroid hormone analogues. Part 1. Preparation of 3′heteroarylmethyl-3,5-di-iodo-<scp>L</scp>-thyronines via phenol–dinitrophenol condensation and relationships between structure and selective thyromimetic activity
作者:Paul D. Leeson、John C. Emmett
DOI:10.1039/p19880003085
日期:——
3′-Heteroarylmethyl analogues (1)–(8) of the natural thyroidhormone 3,3′,5-tri-iodo-L-thyronine (T3) were synthesized as potential selective (cardiac-sparing) thyromimetics. The diphenyl ether moiety was constructed by condensation of 3-substituted 4-methoxyphenols with a 3,5-dinitro-L-tyrosine derivative. Synthesis of the key phenols (28)–(32) required the in situ preparation, at low temperatures
合成了天然甲状腺激素3,3',5-tri- iodo - L -thyronine(T 3)的3'-杂芳基甲基类似物(1)-(8)作为潜在的选择性(保心脏)甲状腺素。通过使3-取代的4-甲氧基苯酚与3,5-二硝基-L-酪氨酸衍生物缩合来构建二苯醚部分。关键酚(28)-(32)的合成需要在低温下原位制备新型金属化物种2-lithio-5-methoxypyrididine(14),5-lithio-2-methoxypyrimidine(15),5 -硫代-2-甲基吡啶(16),5-溴-4-硫代-2-甲氧基吡啶(18)和2,6-二氟-3-硫代吡啶(19),然后与苯甲醛(20)反应。从苄基溴(33)开发出了哒嗪酮(36)和噻唑酮(37)苯酚的替代途径。结构-活性关系表明,选择性吡啶反应与2-氧杂戊基-5-基甲基3'-取代有关,如在吡啶酮(1),哒嗪酮(2),羟基吡啶(4)和噻唑酮(8)中发现的
[EN] 3-HYDROXYOXINDOLE DERIVATIVES AS CRHR2 ANTAGONIST<br/>[FR] DÉRIVÉS DE 3-HYDROXYOXINDOLE UTILES EN TANT QU'ANTAGONISTES DU CRHR2
申请人:RAQUALIA PHARMA INC
公开号:WO2022071484A1
公开(公告)日:2022-04-07
The present invention relates to 3-hydroxyoxindole derivatives which have antagonistic activities against CRHR2, and which are useful in the treatment or prevention of disorders and diseases in which CRHR2 is involved. The invention also relates to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which CRHR2 is involved.
[Structure: see text] A new method for direct phosphonation of thiazoles, furans, and pyrroles is introduced. Reactions of the heteroaryl compounds with dimethyl or diethyl phosphites and Mn(OAc)(3).2H2O under mild conditions give phosphonated products in high yield and good regioselectivity.