137102-29-5Relevant academic research and scientific papers
Bifunctional Iminophosphorane-Catalyzed Enantioselective Sulfa-Michael Addition to Unactivated α,β-Unsaturated Amides
Dixon, Darren J.,Formica, Michele,Hamlin, Trevor A.,Rozsar, Daniel,Yamazaki, Ken
, p. 1006 - 1015 (2022/02/03)
The first metal-free catalytic intermolecular enantioselective Michael addition to unactivated α,β-unsaturated amides is described. Consistently high enantiomeric excesses and yields were obtained over a wide range of alkyl thiol pronucleophiles and elect
Identification of Clinical Candidate M2698, a Dual p70S6K and Akt Inhibitor, for Treatment of PAM Pathway-Altered Cancers
Chen, Xiaoling,Clark, Anderson,Crowley, Lindsey,Deselm, Lizbeth,Georgi, Katrin,Goutopoulos, Andreas,Haxell, Thomas,Heasley, Brian H.,Huck, Bayard,Jackson, Jennifer,Johnson, Theresa,Jones, Reinaldo,Lan, Ruoxi,Lin, Jing,Machl, Andreas,Mochalkin, Igor,Moore, Joseph,Neagu, Constantin,Potnick, Justin,Richardson, Thomas E.,Rohdich, Felix,Sherer, Brian,Sutton, Amanda,Tian, Hui,Wilker, Erik,Xiao, Yufang
supporting information, p. 14603 - 14619 (2021/10/20)
Herein, we report the discovery of a novel class of quinazoline carboxamides as dual p70S6k/Akt inhibitors for the treatment of tumors driven by alterations to the PI3K/Akt/mTOR (PAM) pathway. Through the screening of in-house proprietary kinase library, 4-benzylamino-quinazoline-8-carboxylic acid amide 1 stood out, with sub-micromolar p70S6k biochemical activity, as the starting point for a structurally enabled p70S6K/Akt dual inhibitor program that led to the discovery of M2698, a dual p70S6k/Akt inhibitor. M2698 is kinase selective, possesses favorable physical, chemical, and DMPK profiles, is orally available and well tolerated, and displayed tumor control in multiple in vivo studies of PAM pathway-driven tumors.
Development of Chiral Organosuperbase Catalysts Consisting of Two Different Organobase Functionalities
Kondoh, Azusa,Oishi, Masafumi,Terada, Masahiro,Tezuka, Hikaru
supporting information, p. 7472 - 7477 (2020/03/19)
In the field of chiral Br?nsted base catalysis, a new generation of chiral catalysts has been highly anticipated to overcome the intrinsic limitation of pronucleophiles that are applicable to the enantioselective reactions. Herein, we reveal conceptually new chiral Br?nsted base catalysts consisting of two different organobase functionalities, one of which functions as an organosuperbase and the other as the substrate recognition site. Their prominent activity, which stems from the distinctive cooperative function by the two organobases in a single catalyst molecule, was demonstrated in the unprecedented enantioselective direct Mannich-type reaction of α-phenylthioacetate as a less acidic pronucleophile. The present achievement would provide a new guiding principle for the design and development of chiral Br?nsted base catalysts and significantly broaden the utility of Br?nsted base catalysis in asymmetric organic synthesis.
Discovery and Optimization of Phosphopantetheine Adenylyltransferase Inhibitors with Gram-Negative Antibacterial Activity
Skepper, Colin K.,Moreau, Robert J.,Appleton, Brent A.,Benton, Bret M.,Drumm, Joseph E.,Feng, Brian Y.,Geng, Mei,Hu, Cheng,Li, Cindy,Lingel, Andreas,Lu, Yipin,Mamo, Mulugeta,Mergo, Wosenu,Mostafavi, Mina,Rath, Christopher M.,Steffek, Micah,Takeoka, Kenneth T.,Uehara, Kyoko,Wang, Lisha,Wei, Jun-Rong,Xie, Lili,Xu, Wenjian,Zhang, Qiong,De Vicente, Javier
supporting information, p. 3325 - 3349 (2018/05/01)
In the preceding manuscript [Moreau et al. 2018, 10.1021/acs.jmedchem.7b01691] we described a successful fragment-based lead discovery (FBLD) strategy for discovery of bacterial phosphopantetheine adenylyltransferase inhibitors (PPAT, CoaD). Following several rounds of optimization two promising lead compounds were identified: triazolopyrimidinone 3 and 4-azabenzimidazole 4. Here we disclose our efforts to further optimize these two leads for on-target potency and Gram-negative cellular activity. Enabled by a robust X-ray crystallography system, our structure-based inhibitor design approach delivered compounds with biochemical potencies 4-5 orders of magnitude greater than their respective fragment starting points. Additional optimization was guided by observations on bacterial permeability and physicochemical properties, which ultimately led to the identification of PPAT inhibitors with cellular activity against wild-type E. coli.
Staudinger/aza-Wittig reaction to access Nβ-protected amino alkyl isothiocyanates
Santhosh,Durgamma,Shekharappa,Sureshbabu, Vommina V.
, p. 4874 - 4880 (2018/07/15)
A unified approach to access Nβ-protected amino alkyl isothiocyanates using Nβ-protected amino alkyl azides through a general strategy of Staudinger/aza-Wittig reaction is described. The type of protocol used to access isothiocyanates depends on the availability of precursors and also, especially in the amino acid chemistry, on the behavior of other labile groups towards the reagents used in the protocols; fortunately, we were not concerned about both these factors as precursor-azides were prepared easily by standard protocols, and the present protocol can pave the way for accessing title compounds without affecting Boc, Cbz and Fmoc protecting groups, and benzyl and tertiary butyl groups in the side chains. The present strategy eliminates the need for the use of amines to obtain title compounds and thus, this method is step-economical; additional advantages include retention of chirality, convenient handling and easy purification. A few hitherto unreported compounds were also prepared, and all final compounds were completely characterized by IR, mass, optical rotation, and 1H and 13C NMR studies.
TRICYCLIC PYRI DO-CARBOXAM I D E DERIVATIVES AS ROCK INHIBITORS
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Page/Page column 223, (2015/01/16)
The present invention provides compounds of Formula (I): or stereoisomers, tautomers, or pharmaceutically acceptable salts thereof, wherein all the variables are as defined herein. These compounds are selective ROCK inhibitors. This invention also relates
DERIVATIVES OF 1-(SUBSTITUTED SULFONYL)-2-AMINOIMIDAZOLINE AS ANTITUMOR AND ANTIPROLIFERATIVE AGENTS
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Paragraph 0040, (2014/10/29)
The invention provides novel, water-soluble 2-aminoimidazoline derivatives having general Formula (I) as well as some precursors of Formula (I), which are very potent inducers of G2/M cell cycle arrest. In treated tumor cells, compounds of Formula (I) giv
Synthesis and selective recognition toward zinc ion of chiral poly(imine-triazole)
Zhou, Jinting,Lu, Wei,Hu, Fangyu,Zhang, Mengyu,Jiang, Liming,Shen, Zhiquan
, p. 2248 - 2257 (2014/07/21)
A novel AB type of clickable monomer, (S)-2-[(2-azido-1-phenylethylimino) methyl]-5-propargyloxyphenol (AMPP) was designed and polymerized to yield a class of main-chain chiral poly(imine-triazole)s through the metal-free click reaction. With the thermally induced polymerization, the desired polytriazoles can be easily prepared in high yields by a stepwise heating-up process and have the number-average molecular masses ranging from 5.1 × 103 to 58.1 × 103 (polydispersity indices = 1.38-1.68). The polymers were characterized by Fourier Transform Infrared spectroscopy (FTIR), 1H Nuclear Magnetic Resonance (NMR), and gel permeation chromatography, and their optical properties were studied by fluorescence and circular dichroism (CD) spectroscopies. As a chemosensor, these polymers exhibited a selective "turn-on" fluorescence enhancement response toward Zn2+ ion over other cations such as Na+, K +, Mg2+, Ca2+, Ag+, Pb2+, Cd2+, Hg2+, Mn2+, and Ni2+ in dimethyl sulfoxide. However, the Zn2+-induced fluorescence signal was subject to serious interference by Al3+, Cu2+, Cr 3+, and Fe3+ ions. Interestingly, the chiral polymer showed distinctive changes in the CD spectra on complexation with Zn 2+, which allowed for the discrimination of this ion in the presence of other species tested including those interfering ions observed in the fluorescent detection.
New thiazole carboxamides as potent inhibitors of Akt kinases
Chang, Shaohua,Zhang, Zhang,Zhuang, Xiaoxi,Luo, Jinfeng,Cao, Xianwen,Li, Honglin,Tu, Zhengchao,Lu, Xiaoyun,Ren, Xiaomei,Ding, Ke
supporting information; experimental part, p. 1208 - 1212 (2012/03/11)
A new series of 2-substituted thiazole carboxamides were identified as potent pan inhibitors against all three isoforms of Akt (Akt1, Akt2 and Akt3) by systematic optimization of weak screening hit N-(1-amino-3-phenylpropan-2-yl)- 2-phenylthiazole-5-carboxamide (1). One of the most potent compounds, 5m, inhibited the kinase activities of Akt1, Akt2 and Akt3 with IC50 values of 25, 196 and 24 nM, respectively. The compound also potently inhibited the phosphorylation of downstream MDM2 and GSK3β proteins, and displayed strongly antiproliferative activity in prostate cancer cells. The inhibitors might serve as lead compounds for further development of novel effective anticancer agents.
A tripeptide-like prolinamide-thiourea as an aldol reaction catalyst
Fotaras, Stamatis,Kokotos, Christoforos G.,Kokotos, George
supporting information; scheme or table, p. 5613 - 5619 (2012/08/08)
A tripeptide-like prolinamide-thiourea catalyst with (S)-proline, (1S,2S)-diphenylethylenediamine and (S)-di-tert-butyl aspartate as building blocks provides the products of the reaction between ketones and aromatic aldehydes in high to quantitative yields and high stereoselectivities (up to 99:1 dr and 99% ee). Both the chiral centers of the diamine unit are essential, while the thiourea hydrogen originating from the amine and the amide hydrogen play a predominant role for the catalyst efficiency.
