HYDROXYTRIAZINE COMPOUNDS AND PHARMACEUTICAL USE THEREOF
申请人:Japan Tobacco Inc.
公开号:US20170057943A1
公开(公告)日:2017-03-02
The present invention provides a compound having an mPGES-1 inhibitory activity and useful for the prophylaxis or treatment of pain, rheumatism, osteoarthritis, fever, Alzheimer's disease, multiple sclerosis, arteriosclerosis, glaucoma, ocular hypertension, ischemic retinal disease, systemic scleroderma and/or cancer including colorectal cancer.
The present invention relates to a compound of formula [I-a], [I-b] or [I-c] or a pharmaceutically acceptable salt thereof:
wherein each symbol is as defined in the specification.
A process for the preparation of azide derivatives useful as drugs, perfumes or intermediates of dyes by reacting an alcohol derivative with di-p-nitrophenyl phosphorazidate in the presence of 1,8-diazabicyclo[5.4.0]-7-undecene.
There is provided an indole derivative represented by the above formula (I) or a pharmaceutically acceptable salt thereof which is useful for the treatment of malignant tumor or a brain neurodegenerative disease:
(wherein C ring represents a benzene ring or a cyclohexene ring; X and Y are the same or different and each represent -CH2-, -CH(OH)-, -CH(ORX)-, -CH(SRY)- or carbonyl; R1 and R2 are the same ordifferent and each represent a hydrogen atom, substituted or unsubstituted lower alkyl, substituted or unsubstituted lower alkenyl or substituted or unsubstituted lower alkanoyl or R1 and R2 form a benzene ring together two carbon atoms each being adjacent thereto; and R3, R4 and R5 are the same or different and each represent a hydrogen atom, substituted or unsubstituted lower alkyl, etc.)
Amino Acids and Peptides. X. Phosphorus in Organic Synthesis. V. On the Mechanism for the Peptide Synthesis by Diphenyl Phosphorazidate
作者:TAKAYUKI SHIOIRI、SHUNICHI YAMADA
DOI:10.1248/cpb.22.855
日期:——
The peptide bond formation reaction by some analogs of diphenyl phosphorazidate (DPPA) was investigated, proving that DPPA is much superior in the Young test to diethyl phosphorazidate, di-p-nitrophenyl phosphorazidate, dimorpholyl phosphorazidate, and diphenyl phosphorochloridate. Some spectroscopic investigations on the DPPA method were also made. Possible mechanisms for the DPPA method are presented in Chart 1.
研究了磷酸二苯酯(DPPA)的一些类似物的肽键形成反应,证明 DPPA 在 Young 试验中优于磷酸二乙酯、磷酸二对硝基苯酯、磷酸二甲酰基酯和磷酸二苯酯。此外,还对 DPPA 方法进行了一些光谱学研究。DPPA 法的可能机理见图 1。
Synthesis of 1,5-Disubstituted Tetrazoles from Nitrones by Using Bis(p-nitrophenyl) Phosphorazidate in the Presence of 4-(Dimethylamino)pyridine
A novel method has been developed for the synthesis of 1,5-disubstituted tetrazoles from nitrones by using bis(p-nitrophenyl) phosphorazidate in the presence of 4-(dimethylamino)pyridine. By this approach, various nitrones were converted into the corresponding tetrazoles. This method permits the preparation of 1,5-disubstituted tetrazoles without the need for toxic or explosive reagents.