577780-07-5

Upstream product

• 174072-89-0 2-Amino-4-methyl-5-(4-nitrophenyl)thiophene-3-carboxylic acid ethyl ester 
• 308831-95-0 4-(bromomethyl)-2-((2,6-difluorobenzyl)(ethoxycarbonyl)amino)-5-(4-nitrophenyl)thiophene-3-carboxylic acid ethyl ester 
• 308831-94-9 2-((2,6-difluorobenzyl)(ethoxycarbonyl)amino)-4-methyl-5-(4-nitrophenyl)thiophene-3-carboxylic acid ethyl ester 
• 308831-93-8 2-((ethoxycarbonyl)amino)-4-methyl-5-(4-nitrophenyl)thiophene-3-carboxylic acid ethyl ester 
• 308832-01-1 ethyl 2-[(2,6-difluorobenzyl)(ethoxycarbonyl)amino]-4-{[(2-methoxyethyl)(methyl)amino]methyl}-5-(4-nitrophenyl)thiophene-3-carboxylate 

Downstream Products

• 737789-92-3 ethyl 2-[(2,6-difluorobenzyl)(ethoxycarbonyl)amino]-5-{4-[(methoxycarbamoyl)amino]phenyl}-4-{[(2-methoxyethyl)(methyl)amino]methyl}thiophene-3-carboxylate 
• 737789-93-4 2-[(2,6-difluorobenzyl)(ethoxycarbonyl)amino]-5-{4-[(methoxycarbamoyl)amino]phenyl}-4-{[(2-methoxyethyl)(methyl)amino]methyl}thiophene-3-carboxylic acid 
• 737789-97-8 C₃₃H₃₆F₂N₆O₆S 
• 737790-70-4 1-{4-[1-(2,6-difluorobenzyl)-5-{[(2-methoxyethyl)(methyl)amino]methyl}-3-(6-methoxypyridin-3-yl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidin-6-yl]phenyl}-3-methoxyurea 
• 737789-87-6 TAK-385 

Relevant academic research and scientific papers

Discovery of 1-{4-[1-(2,6-difluorobenzyl)-5-[(dimethylamino)methyl]-3-(6- methoxypyridazin-3-yl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3- d ]pyrimidin-6-yl]phenyl}-3-methoxyurea (TAK-385) as a potent, orally active, non-peptide antagonist of the human gonadotropin-releasing hormone receptor

We previously discovered an orally active human gonadotropin-releasing hormone (GnRH) receptor antagonist, thieno[2,3-d]pyrimidine-2,4-dione derivative 1 (sufugolix). To reduce the cytochrome P450 (CYP) inhibitory activity and improve in vivo GnRH antagonistic activity, further optimization of this scaffold was carried out. We focused our synthetic efforts on chemical modification at the 5 and 3 positions of the thieno[2,3-d]pyrimidine-2,4-dione ring based on computational modeling, which resulted in the discovery of 1-{4-[1-(2,6-difluorobenzyl)-5-[(dimethylamino)methyl]-3-(6-methoxypyridazin-3- yl)-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidin-6-yl]phenyl} -3-methoxyurea (16b) as a highly potent and orally active GnRH antagonist. Compound 16b showed potent in vitro GnRH antagonistic activity in the presence of fetal bovine serum (FBS) without CYP inhibition. Oral administration of 16b maintained the suppressive effect of the plasma luteinizing hormone levels in castrated cynomolgus monkeys at a 3 mg/kg dose for more than 24 h. Compound 16b is currently under clinical development with the code name of TAK-385.

PREMATURE OVULATION PREVENTIVE AGENT

The present invention provides a premature ovulation inhibitor for use in in vitro fertilization or embryo transfer process, which contains a nonpeptidic compound having a gonadotropin releasing hormone antagonistic action. The premature ovulation inhibitor for use in in vitro fertilization or embryo transfer process of the present invention is low toxic, permits oral administration, and has a superior inhibitory effect on premature ovulation in in vitro fertilization or embryo transfer process.

THIENOPYRIMIDINE COMPOUNDS AND USE THEREOF

The present invention provides a compound represented by the formula: wherein R1 is a C1-4 alkyl; R2 is (1) a 5- to 7-membered nitrogen-containing heterocyclic group which may have a substituent selected from the group consisting of (1') a halogen, (2') a hydroxy group, (3') a C1-4 alkyl and (4') a C1-4 alkoxy, (2) a phenyl which may have a substituent selected from the group consisting of (1') a halogen, (2') a C1-4 alkoxy-C1-4 alkyl, (3') a mono-C1-4 alkyl-carbamoyl-C1-4 alkyl, (4') a C1-4 alkoxy and (5') a mono-C1-4 alkylcarbamoyl-C1-4 alkoxy, or the like; R3 is a C1-4 alkyl; R4 is a C1-4 alkoxy, or the like; n is an integer of 1 to 4; or a salt thereof, as a thienopyrimidine compound having gonadotropin-releasing hormone antagonistic activity.

THIENOPYRIMIDINES, PROCESS FOR PREPARING THE SAME AND USE THEREOF

The present invention provides a thienopyrimidine compound, represented by the formula???[wherein, R1 is C1-4 alkyl, R2 is (1) phenyl optionally having a substituent such as amino, mono C1-4 alkylamino and di C1-4 alkylamino, or (2) a heterocyclic group optionally having a substituent such as amino, mono C1-4 alkylamino and di C1-4 alkylamino and the like, R3 is a hydrogen atom or C1-4 alkyl, R4 is C1-4 alkyl optionally having a substituent such as C1-4 alkoxy-carbonyl, carboxyl, mono C1-4 alkylamino and N-C1-4 alkyl-N-C7-10 aralkylamino and the like] or a salt thereof, which has antagonistic action for gonadotropin-releasing hormone.