氨基甲酸酯和酰胺亚硝基Diels-Alder环加成物与1,2-二氢吡啶的杂Cope重排反应可得到新颖的四氢吡啶烯酰胺和烯氨基甲酸酯,详细研究了最佳反应条件。当处理氨基甲酸酯亚硝基环加合物时,获得在C-4位上含有游离OH的四氢吡啶酰胺和氨基甲酸酯的可能性仅限于特定的取代方式。另一方面,从容易获得的酰胺亚硝基环加合物和催化量的亚铜盐开始,现在可以得到几种取代的4a,7,8a-四氢吡啶并[4,3- e ]-[1,4,2]二恶嗪产量中等至良好。
reducing agents. A completely novel, biologically active, bicyclic 1,3-diaza-4-oxa-[3.3.1]-nonene scaffold can be generated by the use of lithium triethylborohydride through unprecedented cascade syn-SN2′ reduction/carbamate reduction/cyclization reactions. The remarkable regioselectivity switches in the allylic reduction process have been rationalized with the aid of computational studies.
1型四氢吡啶并[4,3 - e ] -1,4,2-二恶嗪的特殊性质使得可以通过常规还原剂在区域和立体选择性地获得取代的N-氨基甲酰基四氢吡啶。通过使用三乙基硼氢化锂通过空前的级联顺式-S N 2'还原/氨基甲酸酯还原/环化反应,可以生产出一种全新的,具有生物活性的双环1,3-二氮杂-4-氧杂-[3.3.1]-壬烯骨架。反应。借助于计算研究已经合理化了烯丙基还原过程中显着的区域选择性开关。
[EN] 1,3-DIAZO-4-OXA-[3.3.1]-BICYCLIC DERIVATIVES, PROCESS FOR THEIR MANUFACTURE AND THEIR USE AS A MEDICAMENT, IN PARTICULAR FOR TREATING DIABETES<br/>[FR] DÉRIVÉS 1,3-DIAZO-4-OXA-[3.3.1]-BICYCLIQUES, PROCÉDÉ POUR LEUR FABRICATION ET LEUR UTILISATION EN TANT QUE MÉDICAMENT, EN PARTICULIER POUR LE TRAITEMENT DU DIABÈTE
申请人:UNIV PISA
公开号:WO2018220542A1
公开(公告)日:2018-12-06
The present invention relates to compounds having structural formula (I) wherein R1 and R2 are defined as set forth in the description. The invention also relates to a process for the manufacture of the above compounds of formula (I), wherein a 4a,7, 8, 8a-tetrahydropyrido[4,3-e]-1,4,2-dioxazine reacts with a hydride selected from the group consisting of: lithium triethylborohydride (LiBHEt3), sodium triethylborohydride (NaBHEt3), and lithium tetrahydroaluminate (LiAIH4), in the presence of tetrahydrofuran. Furthermore, the invention is aimed at the above compounds of formula (I), or pharmaceutically acceptable salts thereof, for use in medicine, preferably in the treatment of the diabetes and pathologies or conditions correlated thereto.
1,3-diazo-4-oxa-[3.3.1]-bicyclic derivatives, process for their manufacture and their use as a medicament, in particular for treating diabetes
申请人:UNIVERSITA' DI PISA
公开号:US10913751B2
公开(公告)日:2021-02-09
The present invention relates to compounds having structural formula (I) wherein R1 and R2 are defined as set forth in the description. The invention also relates to a process for the manufacture of the above compounds of formula (I), wherein a 4a,7,8,8a-tetrahydropyrido[4,3-e]-1,4,2-dioxazine reacts with a hydride selected from the group consisting of: lithium triethylborohydride (LiBHEt3), sodium triethylborohydride (NaBHEt3), and lithium tetrahydroaluminate (LiAlH4), in the presence of tetrahydrofuran. Furthermore, the invention is aimed at the above compounds of formula (I), or pharmaceutically acceptable salts thereof, for use in medicine, preferably in the treatment of the diabetes and pathologies or conditions correlated thereto.