6655-31-8Relevant articles and documents
Late-Stage Amination of Drug-Like Benzoic Acids: Access to Anilines and Drug Conjugates through Directed Iridium-Catalyzed C?H Activation
Weis, Erik,Johansson, Magnus J.,Martín-Matute, Belén
supporting information, p. 18188 - 18200 (2021/11/22)
The functionalization of C?H bonds, ubiquitous in drugs and drug-like molecules, represents an important synthetic strategy with the potential to streamline the drug-discovery process. Late-stage aromatic C?N bond–forming reactions are highly desirable, but despite their significance, accessing aminated analogues through direct and selective amination of C?H bonds remains a challenging goal. The method presented herein enables the amination of a wide array of benzoic acids with high selectivity. The robustness of the system is manifested by the large number of functional groups tolerated, which allowed the amination of a diverse array of marketed drugs and drug-like molecules. Furthermore, the introduction of a synthetic handle enabled expeditious access to targeted drug-delivery conjugates, PROTACs, and probes for chemical biology. This rapid access to valuable analogues, combined with operational simplicity and applicability to high-throughput experimentation has the potential to aid and considerably accelerate drug discovery.
One-pot synthesis of sulfonyl-1H-1,2,3-triazolyl-thiomorpholine 1,1-dioxide derivatives and evaluation of their biological activity
Sreerama, Rakesh,Narasimha Swamy,Ravinder,Vasudeva Reddy,Narsimha, Sirassu
, p. 455 - 460 (2020/12/17)
A one-pot procedure for the synthesis of novel 1,2,3-triazole derivatives (5a–5l) in good yields (63 to 77%) using different sulfonic acids and 4-(prop-2-yn-1-yl)thiomorpholine 1,1-dioxide through the in situ generated sulfonyl azides was developed. The structures of the newly synthesized compounds were confirmed by 1H NMR, 13C NMR, mass spectrometry, and elemental analysis. The newly synthesized compounds were screened for in?vitro antibacterial activity and free radical scavenging activity in terms of hydrogen donating or radical scavenging ability by the DPPH method. Among all, the compound N-(4-((4-((1,1-dioxidothiomorpholino) methyl)-1H-1,2,3-triazol-1-yl)sulfonyl)phenyl) acetamide (5l) was found to exhibit potent activity as compared to the standard drugs.
Palladium-Catalyzed One-Pot Synthesis of N -Sulfonyl, N -Phosphoryl, and N -Acyl Guanidines
Qiao, Guanyu,Zhang, Zhen,Huang, Baoliang,Zhu, Liu,Xiao, Fan,Zhang, Zhenhua
supporting information, p. 330 - 340 (2018/01/12)
An efficient palladium-catalyzed cascade reaction of azides with isonitrile and amines is presented; it offers an alternative facile approach toward N -sulfonyl-, N -phosphoryl-, and N -acyl-functionalized guanidines in excellent yield. These series of substituted guanidines exhibit potential biological and pharmacological activities. In addition, the less reactive intermediate benzoyl carbodiimide could be isolated by silica gel column flash chromatography in moderate yield.
