943324-22-9

Upstream product

• 24424-99-5 di-tert-butyl dicarbonate 
• 5399-92-8 4-chloro-1H-pyrazolo[3,4-d]pyrimidine 

Relevant academic research and scientific papers

SUBSTITUTED QUINOXALINES AND BENZOTRIAZINE P70S6 KINASE INHIBITORS

The invention provides compounds that inhibit or modulate the activity of p70S6 kinase, the compounds being of the formula (0), or a salt, tautomer or N-oxide thereof; wherein: X1 is N or N+(0-); X2 is N or CH; Q1 is an optionally substituted C1-8 alkylene; Q2 is a bond or an optionally substituted C1-8 alkylene group; R1 is selected from hydrogen and a group Cy1; Cy1 is an optionally substituted 4 to 7 membered monocyclic non-aromatic carbocyclic or heterocyclic group containing 0, 1 or 2 heteroatom ring members selected from O and S and oxidised forms of S; R2, R3 and R4 are the same or different and each is selected from hydrogen, fluorine, chlorine, C1-2 alkyl and C1-2 alkoxy, wherein each C1-2 alkyl and C1-2 alkoxy is optionally substituted with two or more fluorine atoms; Ar1 is an optionally substituted monocyclic 5 or 6-membered aryl or heteroaryl ring containing 0, 1 or 2 heteroatom ring members selected from O, N and S, or a naphthyl ring Ar2 is an optionally substituted bicyclic 8 to 1 1 -membered heteroaryl group containing 1, 2, 3 or 4 heteroatom ring members selected from O, N and S. The compounds are useful in medicine, for example in the treatment of a disease or condition selected from cancers (e.g. triple negative breast cancer, brain tumours and brain metastases arising from non-brain cancers), neurodevelopmental diseases (e.g. Fragile X syndrome) and neurodegenerative diseases.

Novel Hinge-Binding Motifs for Janus Kinase 3 Inhibitors: A Comprehensive Structure-Activity Relationship Study on Tofacitinib Bioisosteres

The Janus kinases (JAKs) are a family of cytosolic tyrosine kinases crucially involved in cytokine signaling. JAKs have been demonstrated to be valid targets in the treatment of inflammatory and myeloproliferative disorders, and two inhibitors, tofacitinib and ruxolitinib, recently received their marketing authorization. Despite this success, selectivity within the JAK family remains a major issue. Both approved compounds share a common 7H-pyrrolo[2,3-d]pyrimidine hinge binding motif, and little is known about modifications tolerated at this heterocyclic core. In the current study, a library of tofacitinib bioisosteres was prepared and tested against JAK3. The compounds possessed the tofacitinib piperidinyl side chain, whereas the hinge binding motif was replaced by a variety of heterocycles mimicking its pharmacophore. In view of the promising expectations obtained from molecular modeling, most of the compounds proved to be poorly active. However, strategies for restoring activity within this series of novel chemotypes were discovered and crucial structure-activity relationships were deduced. The compounds presented may serve as starting point for developing novel JAK inhibitors and as a valuable training set for in silico models.

INHIBITORS OF Akt ACTIVITY

Invented are novel thiophene compounds, the use of such compounds as inhibitors of protein kinase B activity and in the treatment of cancer and arthritis.