- Novel crystal form of lopinavir and preparation method thereof
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The invention discloses a novel crystal form of lopinavir and a preparation method thereof, belonging to the technical field of medicine crystal forms. According to the invention, lopinavir is prepared, and the novel crystal form of lopinavir is cultured; a real stereo structure of four chiral centers in a lopinavir molecule can be seen from an obtained single crystal structure; crystal data is recorded by a crystal database, namely CCDC 1969375, of the British Cambridge University for the first time; and compared with other detection methods reported at present, an X-ray single crystal diffraction method is the most direct and intuitive method for determining the absolute configuration and space structure of lopinavir.
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Paragraph 0016; 0029-0030
(2021/05/26)
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- Sulfonamide compound and preparation method and application thereof (by machine translation)
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The invention discloses a novel sulfamide compound, and a preparation method and application thereof. The preparation method of the novel sulfamide compound comprises the following steps: performing reaction on a compound 6 to generate a compound 9, obtaining a compound 12 by the compound 9, obtaining a compound 15 by the compound 12, obtaining a compound 21 by the compound 15, and obtaining a compound 4 by the compound 21; performing reaction on a compound 8 to generate a compound 11, obtaining a compound 14 by the compound 11, obtaining a compound 17 by the compound 14, obtaining a compound22 by the compound 17, and obtaining a compound 5 by the compound 22. Optionally, the compound 22 is subjected to reaction to generate a compound 3. The novel sulfamide compound can serve as an HIV-1protease inhibitor.
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Paragraph 0071; 0081
(2020/12/29)
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- Synthesis of novel heterocyclic sulfonamides as protease inhibitors of HIV-1
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Background: HIV-1 protease is a prime target for drug therapy due to its integral role in HIV viral replication. Several protease inhibitors such as lopinavir and tipranavir were shown to possess potent inhibitory activities against the HIV virus. Due to the high mutation rate of HIV, resistance remains a major problem in the treatment of this virus and design and synthesis of new protease inhibitors is an area of continued interest in new drug discovery research. Methods: Utilizing the key fragments of structures of both peptide-based and non-peptide-based protease inhibitors lopinavir and tipranavir, we explored designing some new compounds. Results: Six new protease inhibitors were designed and synthesized based on the key structural fragments in lopinavir and tipranavir. The designed new compounds contain heterocyclic groups such as thiophene, isoxazole, and imidazole groups, and the best compound exhibited 0.6 nm of the protease inhibitory activity. Conclusion: We have prepared some novel heterocyclic sulfonamides utilizing a key fragment based approach by recombining structural fragments of the potent protease inhibitors lopinavir and tipranavir. Some of these newly designed compounds showed good to excellent HIV-1 protease inhibitory activity, which indicated that this method would be useful for the discovery of new drug lead compounds that target HIV.
- Ding, Yili,Smith, Kenneth L.,Vara Prasad, Chamakura V.N.S.,Wang, Bingyun
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- CYTOCHROME P450 OXIDASE INHIBITORS AND USES THEREOF
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The present invention features compounds of formula I or pharmaceutically acceptable salts, solvates or prodrugs thereof, and methods of using the same to inhibit the metabolizing activities of CYP enzymes. The present invention also features methods of using these compounds, salts, solvates or prodrugs to improve the pharmacokinetics of drugs that are metabolized by CYP enzymes.
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Page/Page column 101
(2008/06/13)
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- A PROCESS FOR THE SYNTHESIS OF 2-AMINO-5-PROTECTED AMINO-3-HYDROXY-1, 6-DIPHENYLHEXANE OR A SALT THEREOF - AN INTERMEDIATE FOR ANTIVIRAL DRUGS
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The present invention relates to an improved process for preparing 2-amino-5-protected-amino-3-hydroxy-1,6-diphenylhexane compounds or acid addition salts thereof, which can be useful intermediates for preparing compounds with antiviral activity. The present invention further provides a process for preparing HIV protease inhibitors, lopinavir and ritonavir.
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Page/Page column 20-21
(2008/06/13)
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- Retroviral protease inhibiting compounds
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A compound comprising a substituent of the formula (II) is disclosed as an HIV protease inhibitor. Intermediates for making such compounds and processes for making such intermediates are also disclosed.
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- Novel Lopinavir analogues incorporating non-Aromatic P-1 side chains - Synthesis and structure-activity relationships
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The HIV protease inhibitor Lopinavir has a pseudosymmetric core unit incorporating benzyl groups at both P-1, P-1′ positions. A series of analogues incorporating non-aromatic side chains at the P-1 position were synthesized and the structure-activity relationships explored.
- Sham, Hing L.,Zhao, Chen,Li, Leping,Betebenner, David A.,Saldivar, Ayda,Vasavanonda, Sudthida,Kempf, Dale J.,Plattner, Jacob J.,Norbeck, Daniel W.
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p. 3101 - 3103
(2007/10/03)
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- RETROVIRAL PROTEASE INHIBITING COMPOUNDS
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A compound of the formula: STR1 is disclosed as an HIV protease inhibitor. Methods and compositions for inhibiting an HIV infection are also disclosed.
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