最近鉴定慢性糖尿病并发症的治疗方法的努力导致发现了一系列新的高效和选择性的(2-芳基氨基甲酰基-苯氧基)乙酸醛糖还原酶抑制剂。化合物类别的特征是核心模板,该模板利用分子内氢键将药效基团的关键结构元件定位在构象中,从而促进了高结合亲和力。铅候选物,例如40,5-氟-2-(4-溴-2-氟-苄硫代氨基甲酰基)-苯氧基乙酸,抑制醛糖还原酶,IC(50)为30 nM,而对醛还原酶的活性低1100倍,是一种与活性醛解毒有关的酶。另外,实施例40在4天STZ诱导的糖尿病大鼠模型中以31mg / kg / d po的ED(50)降低了神经山梨糖醇水平。
最近鉴定慢性糖尿病并发症的治疗方法的努力导致发现了一系列新的高效和选择性的(2-芳基氨基甲酰基-苯氧基)乙酸醛糖还原酶抑制剂。化合物类别的特征是核心模板,该模板利用分子内氢键将药效基团的关键结构元件定位在构象中,从而促进了高结合亲和力。铅候选物,例如40,5-氟-2-(4-溴-2-氟-苄硫代氨基甲酰基)-苯氧基乙酸,抑制醛糖还原酶,IC(50)为30 nM,而对醛还原酶的活性低1100倍,是一种与活性醛解毒有关的酶。另外,实施例40在4天STZ诱导的糖尿病大鼠模型中以31mg / kg / d po的ED(50)降低了神经山梨糖醇水平。
Arylalkyl Ketones, Benzophenones, Desoxybenzoins and Chalcones Inhibit TNF-α Induced Expression of ICAM-1: Structure-Activity Analysis
作者:Sarvesh Kumar、Chandra Shekhar Reddy L、Yogesh Kumar、Amit Kumar、Brajendra K. Singh、Vineet Kumar、Shashwat Malhotra、Mukesh K. Pandey、Rajni Jain、Rajesh Thimmulappa、Sunil K. Sharma、Ashok K. Prasad、Shyam Biswal、Erik Van der Eycken、Anthony L. DePass、Sanjay V. Malhotra、Balaram Ghosh、Virinder S. Parmar
DOI:10.1002/ardp.201100279
日期:2012.5
potent intercellular cell adhesion molecule‐1 (ICAM‐1) inhibitors, a large number of arylalkylketones, benzophenones, desoxybenzoins and chalcones and their analogs (54 in total) have been synthesized and screened for their ICAM‐1 inhibitory activity. The structure‐activity relationship studies of these compounds identified three potent chalcone derivatives and also demonstrated the possible mechanism
thio-evodiamine (66c) showed excellent in vitro and in vivo antitumor efficacy with good tolerability and low toxicity. Antitumor mechanism and target profiling studies indicate that compound 66c is the first-in-class triple topoisomerase I/topoisomerase II/tubulin inhibitor. Overall, this study provided an effective strategy for natural product-based drug discovery.
A new class of fluoroquinolone derivatives having improved potency toward PI3K was designed through a docking study.
通过对接研究设计出一类新的氟喹诺酮衍生物,对PI3K的活性有所提高。
Coumarins. III. A Novel Synthesis of<i>o</i>-Hydroxybenzaldehydes
作者:Takeshi Amakasu、Kikumasa Sato
DOI:10.1246/bcsj.40.1428
日期:1967.6
The catalytic hydrogenation of salicyloyl chloride at a mild temperature gave a high yield of salicylaldehyde. A similar partial reduction of substituted salicyloyl chlorides provided the corresponding salicylaldehydes in appreciable yields. Attempts to prepare other isomeric hydroxybenzoyl chlorides were, however, unsuccessful. The relationship between the structure of salicyloyl chlorides and the ease of their conversion to salicylaldehydes is discussed. Moreover, the formylation of phenol with dichloromethyl methyl ether and the selective ortho-formylation are described.
Reaction of lithiated 3-cyano-1(3H)-isobenzofuranone (7) with 5-substituted 2-furfuralacetones 6a-c and subsequent O-methylation of the resulting naphthohydroquinones afforded 2-acetyl-3-furylnaphthalenes 8a-c in good yields. Annulation of the dialkoxyphthalides 12a, b with 6a could also be carried out to give 13a, b. The 5-tert-butoxy-2-furyl compounds were stereoselectively transformed into (1R*, 3R*, 4R*)-pyrano-γ-lactones 16a, 18a, b in high yields by a modification of the Kraus method (LiAlH4 reduction followed by treatment of the product carbinol with p-toluenesulfonic acid (TsOH) in acetonitrile and then with 1, 8-diazabicyclo[5.4.0]undec-7-ene in toluene at low temperatures). The 5-methoxy-2-furyl compound 9b also afforded 16a stereoselectively in one step (treatment with TsOH), but this compound was less effective as a substrate of the pyrano-γ-lactone annulation since a side reaction leading to the spiro-γ-lactone 17 became significant. The 5-phenylthio compound 9c failed to give 16a under a variety of conditions.