Efficient synthesis, spectral analysis and antimicrobial studies of nitrogen and sulfur containing spiro heterocycles from 2,4-diaryl-3-azabicyclo[3.3.1]nonan-9-ones
作者:M. Rani、R. Ramachandran、S. Kabilan
DOI:10.1016/j.bmcl.2010.09.021
日期:2010.11
cyclization of 2,4-diaryl-3-azabicyclo[3.3.1]nonan-9-one thiosemicarbazones (2a–2h, 3a and 3b) with acetic anhydride/propionic anhydride and were characterized by Elemental analysis, IR, 1H NMR and 13C NMR spectral analysis. Single crystal X-ray diffraction has also been recorded for compounds 4c and 5a. From the NMR and Single crystal X-ray diffraction analysis, compounds 4b–4d, 4f–4h, 5b, 5c, 5f–5h, 6a
乙酰基和丙酰基取代的噻二唑衍生物(4a - 4h,5a - 5h,6a,6b,7a和7b)是通过2,4-二芳基-3-氮杂双环[3.3.1] nonan-9-one的环化反应合成的硫代半氨基甲酮(2a – 2h,3a和3b)与乙酸酐/丙酸酐的混合物,并通过元素分析,IR,1 H NMR和13 C NMR光谱进行了表征。还记录了化合物4c和5a的单晶X射线衍射。通过NMR和单晶X射线衍射分析,发现化合物4b - 4d,4f - 4h,5b,5c,5f - 5h,6a,7a和7b采用双椅构型,而化合物4a,4e,5a,5d,5e和6b分别采用环己烷和哌啶环的椅子和船形。此外,使用系列稀释法筛选合成的化合物的抗菌和抗真菌活性。微生物学分析表明,基于氮杂双环壬烷的噻二唑4c / 4h和5c / 5h的C-2和C-4的吸电子功能取代了苯基,对伤寒沙门氏菌,大肠杆菌,肺炎克雷伯菌,黄曲霉,黑曲霉具有显着的抗菌活性。和白色念珠菌的MIC为6