Structural Optimization and Structure–Activity Relationships of N2-(4-(4-Methylpiperazin-1-yl)phenyl)-N8-phenyl-9H-purine-2,8-diamine Derivatives, a New Class of Reversible Kinase Inhibitors Targeting both EGFR-Activating and Resistance Mutations
摘要:
This paper describe the structural optimization of a hit compound, N-2-(4-(4-methylpiperazin-1-yl)phenyl)-N-8-phenyl-9H-purine-2,8-diamine (1), which is a reversible kinase inhibitor targeting both EGFR-activating and drug-resistance (T790M) mutations but has poor binding affinity. Structure-activity relationship studies led to the identification of 9-cyclopentyl-N-2-(4-(4-methylpiperazin-1-yl)phenyl)-N-8-phenyl-9H-purine-2,8-diamine (9e) that exhibits significant in vitro antitumor potency against the non-small-cell lung cancer (NSCLC) cell lines HCC827 and H1975, which harbor EGFR-activating and drug-resistance mutations, respectively. Compound 9e was further assessed for potency and selectivity in enzymatic assays and in vivo anti-NSCLC studies. The results indicated that compound 9e is a highly potent kinase inhibitor against both EGFR-activating and resistance mutations and has good kinase spectrum selectivity across the kinome. In vivo, oral administration of compound 9e at a dose of 5 mg/kg caused rapid and complete tumor regression in a HCC827 xenograft model, and an oral dose of 50 mg/kg initiated a considerable antitumor effect in an H1975 xenograft model.
An electrochemical synthesis of 2-aminobenzoxazoles from 2-aminophenols and isothiocyanates was successfully developed in a one-pot fashion. Using inexpensive and widely available NaI and NaCl co-operatively in catalytic amounts, our electrosynthesis approach provided various 2-aminobenzoxazole products in moderate to high yields in an open-flask type undivided cell without using any external supporting
以一锅法成功开发了由 2-氨基苯酚和异硫氰酸酯电化学合成 2-氨基苯并恶唑。我们的电合成方法以催化量合作使用廉价且广泛可用的 NaI 和 NaCl,在不使用任何外部支持电解质和碱的情况下,在开放式烧瓶型未分隔电池中以中等至高产率提供各种 2-氨基苯并恶唑产品。该协议可用于以中等产率从相应的 2-苯硫酚合成 2-氨基苯并噻唑。该协议有很多好处。它不含金属且具有高度可扩展性,并在温和条件下使用廉价的介质和乙醇/水作为环保溶剂。
Herbicidal ureido containing carbanilates
申请人:Monsanto Company
公开号:US04013450A1
公开(公告)日:1977-03-22
Novel compounds and their herbicidal use having the formula ##STR1## wherein A is selected from the group ##STR2##
showed good performance in enantioselectiveintramolecular Rauhut–Currier reaction of bis(enones), giving the corresponding products in good yield with up to 98% ee. Moreover, with amino acid derived amide-phosphine B3, optically active α-methylene-δ-valerolactone was obtained in 88% yield and > 99.9% ee utilizing the enantioselectiveintramolecular Rauhut-Currier reaction of chalcone derivative.