New Cyclic Imides and Quinazolin-2,4-diones Based on 1,2,3,6-Tetrahydrophthalic anhydride: Synthesis, Semiempirical Study and in vitro Evaluation | ||
| Egyptian Journal of Chemistry | ||
| Volume 66, Issue 2, February 2023, Pages 243-256 PDF (2.04 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejchem.2022.136172.6000 | ||
| Authors | ||
| Ahmed M. Abo-Bakr* 1; Mohamed Mobarak Taha2; Antonous M. Mekhael3; Mounir A. Mohamed4 | ||
| 1Chemistry department, Faculty of Science, South Valley University 83523 Qena, Egypt | ||
| 2Chemistry Department, Faculty of Science, South Valley University, 83523 Qena, Egypt | ||
| 3Chemistry Department, Faculty of Science, South Valley University, 83523 Qena, Egypt. | ||
| 4Chemistry Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt. | ||
| Abstract | ||
| 1,2,3,6-Tetrahydrophthalic anhydride (1) was used as a precursor for the synthesis of new cyclic imides by reacting with several reagents such as 2-aminothiazole, 4-aminopyridine, 2-aminobenzothiazole, cyanoacetic acid hydrazide, amino guanidine, 2,2-diaminomalononitrile, hexamethylenediamine or 2-(amino-ethyldisulfanyl)-ethylamine where the corresponding cyclic imides 2-9 were obtained respectively. Similarly, a series of tetrahydroquinazolin-2,4-diones 11-20 have been synthesized from the reaction of 2-phenylsulphonyloxy-3a,4,7,7a-tetrahydroisoindol-1,3-dione 10 with different amino compounds as hetero-amines, amino acids, and diamines. The proposed structures of the synthesized compounds were supported by their elemental and spectral analyses as well as their semiempirical MOPAC calculations. Semiempirical MOPAC calculations have been also performed to uncover the fundamental reaction pathway of the anhydride 1 with 4-aminopyridine as a model reaction and compound 10 with different amino compounds. The in vitro study of some selected imides and quinazolin-2,4-dinoes against two strains of bacteria possesses a high inhibition effect. | ||
| Keywords | ||
| Cyclic imides; anhydride; quinazolinones; semiempirical; diamines; bisamide | ||
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