162955-48-8Relevant articles and documents
Synthetic Indolactam V Analogues as Inhibitors of PAR2-Induced Calcium Mobilization in Triple-Negative Breast Cancer Cells
Stein, Jan,Stahn, Sonja,Neud?rfl, J?rg-M.,Sperlich, Julia,Schmalz, Hans-Günther,Teusch, Nicole
supporting information, p. 147 - 154 (2018/02/06)
Human proteinase-activated receptor 2 (PAR2), a transmembrane G-protein-coupled receptor (GPCR), is an attractive target for a novel anticancer therapy, as it plays a critical role in cell migration and invasion. Selective PAR2 inhibitors therefore have potential as anti-metastatic drugs. Knowing that the natural product teleocidin A2 is able to inhibit PAR2 in tumor cells, the goal of the present study was to elaborate structure–activity relationships and to identify potent PAR2 inhibitors with lower activity against the adverse target, protein kinase C (PKC). For this purpose, an efficient gram-scale total synthesis of indolactam V (i.e., the parent structure of all teleocidins) was developed, and a library of derivatives was prepared. Some compounds were indeed found to exhibit high potency as PAR2 inhibitors at low nanomolar concentrations with improved selectivity (relative to teleocidin A2). The pseudopeptidic fragment bridging the C3 and C4 positions of the indole core proved to be essential for target binding, whereas activity and target selectivity depends on the substituents at N1 or C7. This study revealed novel derivatives that show high efficacy in PAR2 antagonism combined with increased selectivity.
CALPAIN MODULATORS AND METHODS OF PRODUCTION AND USE THEREOF
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, (2017/09/27)
The present technology relates to compounds, kits, compositions, and methods useful for the treatment of fibrotic disease. In some aspects, the present technology provides for treatment of various diseases or disorders associated or mediated, at least in part, by calpains, such as CAPN1, CAPN2, and/or CAPN9. The present technology is generally applicable to compounds which inhibit myofibroblast differentiation.
Expeditious synthesis of enantiopure, orthogonally protected bis-α-amino acids (OPBAAs) and their use in a study of Nod1 stimulation
Chen, Po-Ting,Lin, Cheng-Kun,Tsai, Chih-Ju,Huang, Duen-Yi,Nien, Fu-Yao,Lin, Wan-Wan,Cheng, Wei-Chieh
, p. 474 - 482 (2015/01/30)
A convenient approach towards the synthesis of orthogonally protected chiral bis-a-amino acids (OPBAAs) is described. The key transformations include: (1) a highly stereoselective conjugation (alkylation) of the Sch?llkopf bislactim ethers and oxazolidinyl alkyl halides to build a backbone skeleton; and (2) our orthogonal protection strategy. A series of enantiopure OPBAAs bearing a variety of alkyl chain as a spacer; two stereogenic centers; and three protecting groups were prepared as examples. These versatile molecules were applied to the synthesis of biologically interesting di- or tri-peptide analogues, including chiral iE-meso-DAP and A-iE-meso-DAP, for the study of Nod1 activation in the innate immune response.
PROCESSES OF PREPARING A JAK1 INHIBITOR AND NEW FORMS THERETO
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Page/Page column 64; 68; 69, (2015/11/24)
This invention relates to processes for preparing a JAKl inhibitor having Formula la: as well as new forms of the inhibitor.
TRICYCLIC HETEROCYCLIC COMPOUNDS, COMPOSITIONS AND METHODS OF USE THEREOF AS JAK INHIBITORS
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, (2013/03/26)
The invention provides novel compounds of formula I having the general formula:(I) wherein Rl s R2, R3, X and Y are as described herein. Accordingly, the compounds may be provided in pharmaceutically acceptable compositions and used for the treatment of immunological or hyperproliferative disorders.
Kilogram synthesis of (S)-3-aminopyran from l -glutamic acid
Savage, Scott,Babu, Srinivasan,Zak, Mark,Mao, Zhongping,Cao, Jianhua,Ge, Yonghui,Ma, Dongxu,Jiang, Guoqiang
, p. 987 - 990 (2013/07/05)
We describe the development of a concise route to prepare kilogram quantities of (S)-3-aminopyran, a key intermediate in the synthesis of a Jak1 inhibitor. The chiral amine was introduced via a chiral-pool approach and involves using inexpensive, commerci
Synthesis of optically active homotryptophan and its oxygen and sulfur analogues
Goswami, Koushik,Paul, Sibasish,Bugde, Sandesh T.,Sinha, Surajit
, p. 280 - 286 (2012/01/05)
d-Homotryptophan and its sulfur analogue have been synthesized by Sonogashira coupling between 3-iodoheteroarenes and ethynyloxazolidine followed by reduction of triple bond and oxidation of alcohol to acid. l-Homotryptophan and its oxygen analogue have b
Asymmetric michael additions of α-nitrocyclohexanone to aryl nitroalkenes catalyzed by natural amino acid-derived bifunctional thioureas
J?rres, Manuel,Schiffers, Ingo,Atodiresei, Iuliana,Bolm, Carsten
, p. 4518 - 4521 (2012/10/29)
A series of new thiourea catalysts prepared from natural amino acids have been applied in organocatalytic asymmetric Michael additions of α-nitrocyclohexanone to nitroalkenes. The resulting addition products are formed with excellent enantioselectivities (up to an er of 98:2) in good yields (up to 90%).
Total synthesis of (-)-indolactam v
Xu, Zhengren,Zhang, Fengying,Zhang, Lihe,Jia, Yanxing
, p. 2512 - 2517 (2011/05/06)
The total synthesis of protein kinase C activator (-)-indolactam V (IL-V) has been successfully completed with two separate approaches: From known 4-nitrotryptophan derivative 3 in 8 steps (49% overall yield) and from l-glutamic acid in 12 steps (18% overall yield), where 4-nitrotryptophanol derivative 4 served as a key intermediate. Derivatives 3 and 4, both incorporating indole 4-substitution and the C-9 stereocenter in IL-V, were synthesized via the Pd-catalyzed indole synthesis from 3-nitro-2-iodoaniline 5 with aldehydes 6 and 7, respectively. Aldehyde 7 was, meanwhile, synthesized from l-glutamic acid in 5 steps (68% yield). Lactamization of the 9-membered ring was achieved using HATU in THF in good yield.
Synthetic aromatic amino acids from a negishi cross-coupling reaction
Suhartono, Marcel,Schneider, Angelika E.,Duerner, Gerd,Goebel, Michael W.
experimental part, p. 293 - 303 (2010/03/30)
An N,O-protected, iodinated bishomoalanine derivative, safely available from glutamic acid, reacts with aryl halides in a Negishi reaction in high yields. From the coupling product, Fmoc-protected amino acids with aromatic and heteroaromatic side chains were generated in high yields by racemization-free procedures. These monomers could be used for solid-phase peptide synthesis. Georg Thieme Verlag Stuttgart.