Keywords

• Riociguat
• 625115-55-1
• C20H19FN8O2

Quick Details

• ProName: Riociguat 625115-55-1 C20H19FN8O2
• CasNo: 625115-55-1
• Molecular Formula: C20H19FN8O2
• Appearance: detailed in specifcations
• Application: API ,OLED .AND SO ON
• DeliveryTime: 7days
• PackAge: as needed
• Port: china main port
• ProductionCapacity: 20 Metric Ton/Month
• Purity: 98%
• Storage: cool place
• Transportation: BY air or sea
• LimitNum: 1 Gram

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Company information

Henan Sunlake Enterprise Corporation is located in Henan Province , The central plain of China , Which enjoys favorable geogeaphical position and convenient transportion, The com[any was established in june. 1998 , until now having more than 18 years experience in manufacturing & exporting chemical raw material .Sunlake is a professional manufacturer engaged in producing and selling chemicals,including Organic & inorganic chemicals , pigments & Dyestuffs , Water treatment chemicals , Food & FEED additives and others . these products have been being well exported to europe , southeast Asia , the Middle East , Africa , South America and some other countries and areas.We sincerely welcome foreign friends to visit our plant for cooperation. With the idea of "quality first,credit priority, Excellent service", We are highly acknowledged by customers for good quality and competitive price. More importantly , the company has a strong R & D team, who are professional engineers and scholars with Ph. D. .So we are confident to serve you better with our high - quality products and professional team.We are taking great efforts to provide our customers with demanded goods and professional services, and continuously improve our core ability of competition and get the momentum for sustainable development, and finally make us being a reliable and professional wupplier in international market.We welcome any serious inquiries from all customers of the world, and sincerely hope to cooperate.

Details

Riociguat Basic information

Pharmacological effects Clinical evaluation Production Method Patent cases

Product Name:	Riociguat
Synonyms:	Riociguat;N-[4,6-Diamino-2-[1-[(2-fluorophenyl)methyl]-1H-pyrazolo[3,4-b]pyridin-3-yl]-5-pyrimidinyl]-N-methylcarbamic acid methyl ester;Bay 63-2521;Carbamic acid, (4,6-diamino-2-(1-((2-fluorophenyl)methyl)-1H-pyrazolo(3,4-B)pyridin-3-yl)-5-pyrimidinyl)methyl-, methyl ester;Riociguat (BAY 63-2521);Bay63-2521,Riociguat;[4,6-DiaMino-2-[1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl]pyriMidin-5-yl]MethylcarbaMic acid Methyl ester;Methyl (4,6-diaMino-2-(1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)pyriMidin-5-yl)(Methyl)carbaMate
CAS:	625115-55-1
MF:	C20H19FN8O2
MW:	422.4156632
EINECS:
Product Categories:	API
Mol File:	625115-55-1.mol

Riociguat Usage And Synthesis

Pharmacological effects	Riociguat is a soluble guanylyl cyclase activator, developed by the German Bayer ,it is an important signaling enzyme, which can be activated by nitric oxide (NO) to catalyze guanosine triphosphate ( GTP) to convert into the second messenger cyclic guanosine monophosphate (cGMP). Soluble guanylate cyclase is currently the only known NO receptor. Damage of NO-sGC-cGMP signal pathway is believed to be the cause of the incidence of cardiovascular, lung, endothelium, kidney and liver diseases. NO synthesis in patients with pulmonary hypertension is not enough, NO donor drugs, although effective, short half-life, riociguat can directly activate sGC, stable NO-sGC combination so as to upregulate the second messenger cGMP. riociquat can significantly increase exercise tolerance in patients with hemodynamic parameters of cardiac function and prolong the time to reach clinical worsening (PATENT study), It may also be effective in treating CTEPH(CHEST study) .  October 8, 2013, the US FDA approved Riociguat for the treatment of chronic thromboembolic pulmonary hypertension and PAH (Pulmonary Arterial Hypertension).  At present, Riociguat is not yet sold in the domestic market ,in the United States it is sold by the Haoeyou Pharmacy , the pharmacy is subsidiary of California Healthcom Group, because the market ofRiociguat is in its infancy, its sales grow slowly.
Clinical evaluation	In clinical trials ,261 patients with chronic thromboembolic pulmonary hypertension (CTEPH) were divided into riociguat and placebo groups, a six-minute walk distance (6MWD) as the main clinical endpoint, after 16 weeks of treatment, 6MWD of riociguat group increased by 46 meters higher than the average in the placebo group. 443 cases of PAH were divided into riociguat and placebo groups,after 12 weeks of treatment, riociguat group increased 36 meters higher than the average 6MWD in the placebo group. Boxed warning suggests that the drug has a embryo toxicity, pregnant patients are forbidden.  Adempas is granted baseing on two global III studies CHEST-1 and PATENT-1, whose findings are published in the July 25, 2013"New England Journal of Medicine," (2013; 369: 330-40; 2013; 369: 319-29). Thomson Reuters released analysis report that it is expected that sales of the drug in 2017 will reach $ 679 million, while the market will face a potential threat constituted by the Swiss company Actelion bosentan and Gilead drug Imber bosentan tablets.  The above information is edited by the chemicalbook of Tian Ye.
Production Method	Synthetic key of Riociguat is the synthesis of three heterocyclic ring. Compounds 1 and 2 directly close the pyrazole ring to generate 3,3 and 4 and then close the pyrazole ring to obtain5, ethyl of 5 is dehydrated using trifluoroacetic anhydride to give a cyano group after amidation by the ammonia , the cyano group is treated with methanol sodium and chloride ammonium to get amidine 6. The two nitrogen atoms on Amidine 6 as dinucleophile, with two cyano on compound 7 as the electrophile ,directly close the pyrimidine ring to give 8. pyrimidine 5-position amino group on 8 with a strong nucleophilic, directly reacts with methyl chloride and then methylates to give riociguat.