481049-94-9

Upstream product

• 530-62-1 1,1'-carbonyldiimidazole 
• 74-89-5 methylamine 
• 174072-63-0 6-(4-aminophenyl)-5-(N-benzyl-N-methylaminomethyl)-1-(2,6-difluorobenzyl)-3-phenylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione 
• 103-71-9 phenyl isocyanate 
• 697-73-4 2,6-difluorobenzyl chloride 
• 5332-96-7 1-(4-nitrophenyl)propan-2-one 
• 174071-70-6 5-(N-benzyl-N-methylaminomethyl)-1-(2,6-difluorobenzyl)-6-(4-nitrophenyl)-3-phenylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione 
• 174073-49-5 5-bromomethyl-1-(2,6-difluorobenzyl)-6-(4-nitrophenyl)-3-phenylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione 
• 174073-19-9 1-(2,6-difluorobenzyl)-5-methyl-6-(4-nitrophenyl)-3-phenylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione 
• 358739-99-8 4-methyl-5-(4-nitro-phenyl)-2-(3-phenyl-ureido)-thiophene-3-carboxylic acid ethyl ester 
• 174072-92-5 5-methyl-6-(4-nitrophenyl)-3-phenylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione 
• 174072-89-0 2-Amino-4-methyl-5-(4-nitrophenyl)thiophene-3-carboxylic acid ethyl ester 

Relevant academic research and scientific papers

MEDICINAL SOLUTIONS

The present invention relates to a pharmaceutical solution containing a physiologically active non-peptide substance, an organic acid and a biocompatible organic solvent, and provides a pharmaceutical solution wherein a physiologically active non-peptide

Discovery of a thieno[2,3-d]pyrimidine-2,4-dione bearing a p-methoxyureidophenyl moiety at the 6-position: A highly potent and orally bioavailable non-peptide antagonist for the human luteinizing hormone-releasing hormone receptor

We have previously disclosed the first potent and orally effective non-peptide antagonist for the human luteinizing hormone-releasing hormone (LHRH) receptor, a thieno[2,3-b]pyridin-4-one derivative, T-98475 (1). Extensive research on developing non-peptide LHRH antagonists has been carried out by employing a strategy of replacing the thienopyridin-4-one nucleus with other heterocyclic surrogates. We describe herein the design and synthesis of a series of thieno-[2,3-d]pyrimidine-2,4-dione derivatives containing a biaryl moiety, which led to the discovery of a highly potent and orally active non-peptide LHRH antagonist, 5-(N-benzyl-N-methylaminomethyl)-1-(2,6-difluorobenzyl)-6-[4- (3-methoxyureido)phenyl]-3-phenylthieno[2,3-d]pyrimidine-2,4(1H,3H)-dione (9k: TAK-013). Compound 9k showed high binding affinity and potent in vitro antagonistic activity for the human receptor with half-maximal inhibition concentration (IC50) values of 0.1 and 0.06 nM, respectively. Oral administration of 9k caused almost complete suppression of the plasma LH levels in castrated male cynomolgus monkeys at a 30 mg/kg dose with sufficient duration of action (more than 24 h). The results demonstrated that the thienopyrimidine-2,4-dione core is an excellent surrogate for the thienopyridin-4-one and that thienopyrimidine-2,4-diones and thienopyridin-4-ones constitute a new class of potent and orally bioavailable LHRH receptor antagonists. Furthermore, molecular modeling studies indicate that the unique methoxyurea side chain of 9k preferentially forms an intramolecular hydrogen bond between the aniline NH and the methoxy oxygen atom. The hydrogen bond will shield the hydrogen bonding moieties from the solvent and reduce the desolvation energy cost. It is therefore speculated that the intramolecular hydrogen bond resulting from judicious incorporation of an oxygen atom into the terminal alkyl group of the urea may increase the apparent lipophilicity to allow increased membrane permeability and consequently to improve the oral absorption of 9k in monkeys. On the basis of its profile, compound 9k has been selected as a candidate for clinical trials and it is expected that it will provide a new class of potential therapeutic agents for the clinical treatment of a variety of sex-hormone-dependent diseases.

Medicinal preparations for treating sex hormone-dependent diseases

Medicinal preparations for treating sex hormone-dependent diseases which comprise a combination of a compound having a luteinizing hormone-releasing hormone agonistic effect or its salt with a compound having a luteinizing hormone-releasing hormone antagonistic effect or its salt for administering the compound having a luteinizing hormone-releasing hormone agonistic effect or its salt followed by the compound having a luteinizing hormone-releasing hormone antagonistic effect or its salt. By using these preparations, the concentration of a sex hormone (for example, testosterone, LH, FSH, estrogen) can be quickly recovered after the medicable period of a compound having a luteinizing hormone-releasing hormone antagonistic effect or its salt or a preparation containing the same (preferably a sustained-release preparation), which makes it possible to definitely determine the drug cessation period in an intermittent treatment.

Preventives/remedies for alzheimer's disease

The present invention provides an agent for the prophylaxis or treatment of Alzheimer's disease. The agent for the prophylaxis or treatment of Alzheimer's disease of the present invention containing a compound having a GnRH antagonistic action shows low toxicity and has a superior preventive and therapeutic effect on Alzheimer's disease.