916764-90-4

Upstream product

• 2565-47-1 1-methyl-2,4,6-pyrimidinetrione 
• 4318-56-3 3-methyl-6-chlorouracil 
• 824-94-2 p-methoxybenzyl chloride 
• 916764-89-1 6-chloro-1-(4-methoxybenzyl)-3-methylpyrimidine-2,4(1H,3H)-dione 

Downstream Products

• 916765-00-9 6-(2-(biphenyl-4-ylmethylene)hydrazinyl)-1-(4-methoxybenzyl)-3-methylpyrimidine-2,4(1H,3H)-dione 
• 1351961-59-5 7-(4-methoxybenzyl)-5-methyl-2,7-dihydro-4H-pyrazolo[3,4-d]pyrimidine-4,6(5H)-dione 
• 960064-67-9 5-methyl-3-(phenylamino)-2-(4-(pyridin-2-yl)benzyl)-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione 
• 916764-85-7 (6aR,9aS)-5,6a,7,8,9,9a-hexahydro-5-methyl-3-phenylamino-2-(4-(trifluoromethyl)benzyl)cyclopent[4,5]imidazo[1,2-a]pyrazolo[4,3-e]pyrimidin-4(2H)-one 

Relevant academic research and scientific papers

Design, synthesis and biological evaluation of novel pyrazolopyrimidone derivatives as potent PDE1 inhibitors

Phosphodiesterase-1 (PDE1) is a promising drug target closely related to central and peripheral diseases. With the assistance of molecular docking and dynamics simulations, we designed and synthesized a novel series of pyrazolopyrimidone derivatives as effective and metabolically stable inhibitors against PDE1. Most compounds have good inhibitory activities against PDE1 at the concentration of 20 nM. Compound 2j with the IC50 of 21 nM against PDE1B, shows good metabolic stability in the rat liver microsomes (RLM) (t1/2 of 28.5 min), indicating that compound 2j can be used as a tool to explore the molecular recognition mechanism between inhibitors and the target protein PDE1.

SHP2 PHOSPHATASE INHIBITORS AND METHODS OF USE THEREOF

The present disclosure relates to novel compounds and pharmaceutical compositions thereof, and methods for inhibiting the activity of SHP2 phosphatase with the compounds and compositions of the disclosure. The present disclosure further relates to, but is not limited to, methods for treating disorders associated with SHP2 deregulation with the compounds and compositions of the disclosure.

COMPOUNDS AND COMPOSITIONS FOR INHIBITING THE ACTIVITY OF SHP2

The present invention relates to compounds of formula I. The compounds are inhibitors of the Src Homolgy-2 phosphatase (SHP2) and thus useful in the treatment of Noonan Syndrome, Leopard Syndrome and cancer.

Discovery of Potent and Selective Inhibitors of Phosphodiesterase 1 for the Treatment of Cognitive Impairment Associated with Neurodegenerative and Neuropsychiatric Diseases

A diverse set of 3-aminopyrazolo[3,4-d]pyrimidinones was designed and synthesized. The structure-activity relationships of these polycyclic compounds as phosphodiesterase 1 (PDE1) inhibitors were studied along with their physicochemical and pharmacokinetic properties. Systematic optimizations of this novel scaffold culminated in the identification of a clinical candidate, (6aR,9aS)-2-(4-(6-fluoropyridin-2-yl)benzyl)-5-methyl-3-(phenylamino)-5,6a,7,8,9,9a-hexahydrocyclopenta[4,5]imidazo[1,2-a]pyrazolo[4,3-e]pyrimidin-4-(2H)-one phosphate (ITI-214), which exhibited picomolar inhibitory potency for PDE1, demonstrated excellent selectivity against all other PDE families and showed good efficacy in vivo. Currently, this investigational new drug is in Phase I clinical development and being considered for the treatment of several indications including cognitive deficits associated with schizophrenia and Alzheimer's disease, movement disorders, attention deficit and hyperactivity disorders, and other central nervous system (CNS) and non-CNS disorders.

FREE BASE CRYSTALS

The present invention relates to crystals of (6aR,9aS)-5,6a,7,8,9,9a-hexahydro-5-methyl-3-(phenylamino)-2-((4-(6-fluoropyridin-2-yl)phenyl)methyl)-cyclopent[4,5]imidazo[1,2-a]pyrazolo[4,3-e]pyrimidin-4(2H)-one, and methods of making and using such crystals.

SALT CRYSTALS

The present invention relates to acid addition salt and salt crystals of (6aR,9aS)-5,6a,7,8,9,9a-hexahydro-5-methyl-3-(phenylamino)-2-((4-(6-fluoropyridin-2-yl)phenyl)methyl)-cyclopent[4,5]imidazo[1,2-a]pyrazolo[4,3-e]pyrimidin-4(2H)-one, composition comprising the same and the method of making and using such salt and crystals.

ORGANIC COMPOUNDS

The invention provides novel 7,8-dihydro-imidazo[l,2-α]pyrazolo[4,3-e]pyrimidin-4- one compounds and 7,8,9-trihydro-[lHor 2/f]-pyrimido [l,2-a]pyrazolo[4,3- e]pyrimidin-4(5H)-one compounds, substituted at the 1 or 2 position with C2-g allcyl, C3-9 cycloalkyl, heteroarylalkyl, or substituted arylalkyl, in free, salt or prodrug form, processes for their production, their use as pharmaceuticals, particularly as PDEl inhibitors, and pharmaceutical compositions comprising them.