based on the search for active compounds with multitarget profiles beneficial in terms of potential side effects and on the implementation of screening for potential multidirectional central activity. Methods Compounds were synthesized by means of chemical synthesis. After antiseizure and neurotoxicity screening in vivo, KM-408 and its enantiomers were chosen for analgesic activity evaluations. Further
背景 癫痫经常与神经性疼痛并存。我们的方法基于寻找具有多靶点特征的活性化合物,这些特征在潜在副作用方面是有益的,并且基于对潜在多向中枢活性的筛选实施。 方法 化合物是通过化学合成的方式合成的。在体内进行抗癫痫和神经毒性筛选后,选择KM-408及其对映体进行镇痛活性评价。进一步的安全性研究包括小鼠急性毒性、对大鼠正常心电图和血压的影响、大鼠全身体积描记术以及体外和生化测定。已经在大鼠中研究了静脉内和口服给药后的药代动力学。已在大鼠血清和尿液中研究了体内代谢。作为作用机制研究的一部分,进行了放射性配体结合研究。 结果 KM-408 的选定结果: K i sigma = 7.2*10 –8;K i 5-HT 1A = 8.0*10 –7 ; ED 50 MES(小鼠,ip)= 13.3 mg/kg;福尔马林试验(I 期,小鼠,ip)——在 30 mg/kg 时有活性;SNL(大鼠,ip)——在
Design and Synthesis of Soluble and Cell-Permeable PI3Kδ Inhibitors for Long-Acting Inhaled Administration
作者:Matthew W. D. Perry、Karin Björhall、Britta Bonn、Johan Carlsson、Yunhua Chen、Anders Eriksson、Linda Fredlund、Hai’e Hao、Neil S. Holden、Kostas Karabelas、Helena Lindmark、Feifei Liu、Nils Pemberton、Jens Petersen、Sandra Rodrigo Blomqvist、Reed W. Smith、Tor Svensson、Ina Terstiege、Christian Tyrchan、Wenzhen Yang、Shuchun Zhao、Linda Öster
DOI:10.1021/acs.jmedchem.7b00401
日期:2017.6.22
PI3K delta is a lipid kinase that is believed to be important in the migration and activation of cells of the immune system. Inhibition is hypothesized to provide a powerful yet selective immunomodulatory effect that may be beneficial for the treatment of conditions such as asthma or rheumatoid arthritis. In this work, we describe the identification of inhibitors based on a thiazolopyridone core structure and their subsequent optimization for inhalation: The initially identified compound (13) had good potency and isoform selectivity but was not suitable for inhalation. Addition of basic substituents to a region of the molecule pointing to solvent was tolerated (enzyme inhibition pIC(50) > 9), and by careful manipulation, of the pK(a) and lipophilicity, we were able to discover compounds (20b, 20f) with good lung retention and cell potency that could be taken forward to in vivo studies where significant target engagement could be demonstrated.
Fernandez, Susana; Brieva, Rosario; Rebolledo, Francisca, Journal of the Chemical Society. Perkin transactions I, 1992, # 21, p. 2885 - 2890
Autoxidation of N-alkylamides. Part I. N-Acylamides as oxidation products
作者:M. V. Lock、B. F. Sagar
DOI:10.1039/j29660000690
日期:——
Products of the thermal and photosensitised autoxidation of N-alkyl- and NN-dialkyl-amides have been identified. N-n-Alkylamides yield principally N-acylamides, primary amides, and N-formylamides, as a result of initial abstraction of a hydrogen atom from the carbon adjacent to nitrogen. Formation of N-formylamides, and of N-acylamides from N-s-alkylamides, involves C(1)–C(2) bond scission in an N-alkyl
Acylation of diamines using α‐aryl‐β‐keto esters occurs regioselectively at the less hindered amino group. The transacylation using N‐alkylamino alcohol resulted in chemoselective O‐acylation in the absence of metal catalyst. Protection of the amino group is not necessary. These reactions proceed efficiently because of the pseudo‐intramolecular process.