PMID- 26487913 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20151021 LR - 20201001 IS - 1948-5875 (Print) IS - 1948-5875 (Electronic) IS - 1948-5875 (Linking) VI - 6 IP - 10 DP - 2015 Oct 8 TI - Design, Synthesis, and Biological Evaluation of 1,2-Dihydroisoquinolines as HIV-1 Integrase Inhibitors. PG - 1065-70 LID - 10.1021/acsmedchemlett.5b00230 [doi] AB - 6-Endo-dig-cyclization is an efficient method for the synthesis of 1,2-dihydroisoquinolines. We have synthesized few 1,2-dihydroisoquinolines having different functionality at the C-1, C-3, C-7, and N-2 positions for evaluation against HIV-1 integrase (HIV1-IN) inhibitory activity. A direct nitro-Mannich condensation of o-alkynylaldimines and dual activation of o-alkynyl aldehydes by inexpensive cobalt chloride yielded desired compounds. Out of 24 compounds, 4m and 6c came out as potent integrase inhibitors in in vitro strand transfer (ST) assay, with IC50 value of 0.7 and 0.8 muM, respectively. Molecular docking of these compounds in integrase revealed strong interaction between metal and ligands, which stabilizes the enzyme-inhibitor complex. The ten most active compounds were subjected to antiviral assay. Out of those, 6c reduced the level of p24 viral antigen by 91%, which is comparable to RAL in antiviral assay. Interestingly, these compounds showed similar ST inhibitory activity in G140S mutant, suggesting they can act against resistant strains. FAU - Tandon, Vibha AU - Tandon V AD - Department of Chemistry, University of Delhi , Delhi 110007, India ; Special Centre for Molecular Medicine, Jawaharlal Nehru University , New Delhi 110067, India. FAU - Urvashi AU - Urvashi AD - Department of Chemistry, University of Delhi , Delhi 110007, India. FAU - Yadav, Pooja AU - Yadav P AD - Department of Chemistry, University of Delhi , Delhi 110007, India. FAU - Sur, Souvik AU - Sur S AD - Department of Chemistry, University of Delhi , Delhi 110007, India. FAU - Abbat, Sheenu AU - Abbat S AD - National Institute of Pharmaceutical Education and Research , S. A. S Nagar, Mohali, Punjab 160062, India. FAU - Tiwari, Vinod AU - Tiwari V AD - Department of Chemistry, University of Delhi , Delhi 110007, India. FAU - Hewer, Raymond AU - Hewer R AD - Biomedical Advanced Material Division, Mintek , Private Bag X3015, Randburg 2125, Johannesburg, South Africa. FAU - Papathanasopoulos, Maria A AU - Papathanasopoulos MA AD - Department of Molecular Medicine and Haematology, University of the Witwatersrand Medical School , Parktown 2193, Johannesburg, South Africa. FAU - Raja, Rameez AU - Raja R AD - Laboratory of Virology, National Institute of Immunology , New Delhi 110067, India. FAU - Banerjea, Akhil C AU - Banerjea AC AD - Laboratory of Virology, National Institute of Immunology , New Delhi 110067, India. FAU - Verma, Akhilesh K AU - Verma AK AD - Department of Chemistry, University of Delhi , Delhi 110007, India. FAU - Kukreti, Shrikant AU - Kukreti S AD - Department of Chemistry, University of Delhi , Delhi 110007, India. FAU - Bharatam, Prasad V AU - Bharatam PV AD - National Institute of Pharmaceutical Education and Research , S. A. S Nagar, Mohali, Punjab 160062, India. LA - eng PT - Journal Article DEP - 20150810 PL - United States TA - ACS Med Chem Lett JT - ACS medicinal chemistry letters JID - 101521073 PMC - PMC4601057 OTO - NOTNLM OT - Multicomponent reaction OT - integrase OT - integrase inhibitors OT - molecular docking COIS- The authors declare no competing financial interest. EDAT- 2015/10/22 06:00 MHDA- 2015/10/22 06:01 PMCR- 2016/10/08 CRDT- 2015/10/22 06:00 PHST- 2015/06/09 00:00 [received] PHST- 2015/08/09 00:00 [accepted] PHST- 2015/10/22 06:00 [entrez] PHST- 2015/10/22 06:00 [pubmed] PHST- 2015/10/22 06:01 [medline] PHST- 2016/10/08 00:00 [pmc-release] AID - 10.1021/acsmedchemlett.5b00230 [doi] PST - epublish SO - ACS Med Chem Lett. 2015 Aug 10;6(10):1065-70. doi: 10.1021/acsmedchemlett.5b00230. eCollection 2015 Oct 8.