蛋白酶体有助于维持蛋白质稳态,其抑制作用对某些类型的癌症和自身免疫疾病有益。然而,对健康细胞中蛋白酶体的抑制会导致不希望有的副作用,并且已经做出重大努力来鉴定对免疫蛋白酶体具有特异性的抑制剂,特别是用于治疗表现出该蛋白酶体同种型的水平和活性增加的疾病。在这里,我们报告了我们为发现人类免疫蛋白酶体的片段大小抑制剂所做的努力。内部结构多样化片段文库的筛选导致苯并[ d ]恶唑-2(3 H )-硫酮、苯并[ d ]噻唑-2(3 H )-硫酮、苯并[ d ]恶唑-2(3 H )-硫酮的鉴定]咪唑-2(3 H )-硫酮和 1-甲基苯并[ d ]咪唑-2(3 H )-硫酮(通用术语苯并恶唑-2(3 H))-硫酮) 作为免疫蛋白酶体胰凝乳蛋白酶样 (β5i) 亚基的抑制剂。随后的构效关系研究为我们提供了有关生长载体的见解。显示了与 β5i 亚基的结合,并确定了对组成型蛋白酶体的 β5 亚基的选择性。对这些化合物的彻底表征表明,它们通过与
Ac2O–Py/basic alumina as a versatile reagent for acetylations in solvent-free conditions under microwave irradiation
作者:Satya Paul、Puja Nanda、Rajive Gupta、André Loupy
DOI:10.1016/s0040-4039(02)00732-3
日期:2002.6
Acetic anhydride–pyridine over basic alumina has been used in order to carry out acetylations of hydroxy, thiol and amino groups in solvent-free conditionsunder microwave irradiation. The technique can be extended for selective acetylations by regulation of irradiation time.
compounds based on a benzothiazolyl scaffold and evaluated their inhibitory ability and mechanism of action. The most potent inhibitors contained 3-chloro and 4-hydroxy substitution on the phenyl ring moiety, a small substituent at position 6 on the benzothiazole moiety, and the two moieties were connected via a urea linker (4at, 4bb, and 4bg). These compounds exhibited IC50 values of 1–2 μM and showed an
The synthesis of benzo[b][1,4]thiazin-3(4H)-one derivatives in a simple and efficient method from the one-pot reaction of substituted 2-chlorobenzenthiols, chloroacetyl chloride, and primary amines via Smiles rearrangement undermicrowaveirradiation gave high yields (65–92%) of the products with short reaction time (15–20 min).
取代的2-氯苯硫醇,氯乙酰氯和伯胺的一锅反应通过Smiles重排在一个简单有效的方法中合成苯并[ b ] [1,4]噻嗪-3(4 H)-one衍生物微波辐照可在短时间内(15-20分钟)获得高收率(65-92%)的产品。
HETEROARYL DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS
申请人:Knust Henner
公开号:US20090163485A1
公开(公告)日:2009-06-25
The present invention relates to compounds of formula
wherein
Ar, Het, R
1
and n are as defined herein and to pharmaceutically suitable acid addition salts, optically pure enantiomers, racemates or diastereomeric mixtures thereof. Compounds of formula I are orexin receptor antagonists and are useful in the treatment of sleep apnea, narcolepsy, insomnia, parasomnia, jet lag syndrome, circadian rhythms disorder and sleep disorders associated with neurological diseases.