Facile Rearrangements of Alkynylamino Heterocycles with Noble Metal Cations
摘要:
A number of 2-(alkynylamino)-substituted heterocycles have been synthesized. These heterocycles rearrange in the presence of silver(I) and gold(I) salts to give novel 2H-pyrimido[2,1-b]benzoxazoles, 2H-pyrimido[2,1-b]benzothiazoles, and a 2H-pyrimido[2,1-b]benzoselenazole. Two of the the 2H-pyrimido[2,1-b]benzoxazoles were isolated in good yield. The kinetics of the silver tetrafluoroborate-catalyzed rearrangements of selected (alkynylamino)benzoxazoles and benzothiazoles have been examined by H-1 NMR in CD3CN. Factors affecting the electron densities of the triple bond and of the nitrogen atom in the heterocycle are important in influencing the rate of rearrangement.
Facile Rearrangements of Alkynylamino Heterocycles with Noble Metal Cations
摘要:
A number of 2-(alkynylamino)-substituted heterocycles have been synthesized. These heterocycles rearrange in the presence of silver(I) and gold(I) salts to give novel 2H-pyrimido[2,1-b]benzoxazoles, 2H-pyrimido[2,1-b]benzothiazoles, and a 2H-pyrimido[2,1-b]benzoselenazole. Two of the the 2H-pyrimido[2,1-b]benzoxazoles were isolated in good yield. The kinetics of the silver tetrafluoroborate-catalyzed rearrangements of selected (alkynylamino)benzoxazoles and benzothiazoles have been examined by H-1 NMR in CD3CN. Factors affecting the electron densities of the triple bond and of the nitrogen atom in the heterocycle are important in influencing the rate of rearrangement.
The present invention relates to antibiotic compounds of formula (I), to compositions containing these compounds and to methods of treating bacterial diseases and infections using the compounds. The compounds find application in the treatment of infection with, and diseases caused by, Gram-positive and/or Gram-negative bacteria, and in particular in the treatment of infection with, and diseases caused by, Neisseria gonorrhoeae.
申请人:KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY 한국화학연구원(319980077651)
公开号:KR101524208B1
公开(公告)日:2015-05-29
본 발명은 신규한 벤조옥사졸 유도체, 이의 제조방법 및 이를 유효성분으로 포함하는 비만 및 비만관련대사 질환 특히, 당뇨병 및 다양한 당뇨 관련 질환의 예방 또는 치료용 의약학적 조성물에 관한 것이다. 본 발명의 신규한 벤조옥사졸 유도체는 당-의존적 인슐린 분비를 증가시키고 섭식과 체중 증가의 억제효과가 있는 GPR119(G protein-coupled receptor 119)의 활성을 효율적으로 항진시킴으로써 당 및 지질 대사를 개선시켜, 당뇨 뿐 아니라, 비만, 고지혈증, 당뇨병성 혈관질환 등 다양한 당뇨병성 합병증에 대한 효율적인 예방 및 치료용 조성물로 유용하게 이용될 수 있다
PREPARATION AND USE OF ARYL ALKYL ACID DERIVATIVES FOR THE TREATMENT OF OBESITY
申请人:Smith Roger
公开号:US20090253762A1
公开(公告)日:2009-10-08
This invention relates to certain aryl alkyl acid compounds, compositions, and methods for treating or preventing obesity and related diseases.
本发明涉及某些芳基烷基酸化合物、组合物以及治疗或预防肥胖和相关疾病的方法。
Preparation and Use of Biphenyl-4-Yl-Carbonylamino Acid Derivatives for the Treatment of Obesity
申请人:Smith Roger
公开号:US20070265298A1
公开(公告)日:2007-11-15
This invention relates to certain biphenyl-4-yl carbonylamino acid compounds, compositions, and methods for treating or preventing obesity and related diseases.