title: Synthesis of privileged scaffolds by using diversity-oriented synthesis.
abstract: An elegant reagent-controlled strategy has been developed for the generation of a diverse range of biologically active scaffolds from a chiral bicyclic lactam. Reduction of the chiral lactam with LAH or alkylation with LHMDS to trigger different cyclization reactions have been shown to generate privileged scaffolds, such as pyrrolidines, indolines, and cyclotryptamines. Their amenability to substitution allows us to create various compound libraries by using these scaffolds. In silico studies were used to estimate the drug-like properties of these compounds. Selected compounds were subjected to anticancer screening by using three different cell lines. In addition, all these compounds were subjected to antibacterial screening to gauge the spectrum of biological activity that was conferred by our DOS methodology. Gratifyingly, with no additional iterative cycles, our method directly generated anticancer compounds with potency at low nanomolar concentrations, as represented by spiroindoline 14.
authors.affiliation: Chemistry Services, GVKBioscience, Plot 28 A, IDA Nacharam, Hyderabad, India.
authors.forename: Ramu
authors.initials: R
authors.lastname: Surakanti
authors.forename: Sumalatha
authors.initials: S
authors.lastname: Sanivarapu
authors.forename: Chiranjeevi
authors.initials: C
authors.lastname: Thulluri
authors.forename: Pravin S
authors.initials: PS
authors.lastname: Iyer
authors.forename: Raghuram S
authors.initials: RS
authors.lastname: Tangirala
authors.forename: Rambabu
authors.initials: R
authors.lastname: Gundla
authors.forename: Uma
authors.initials: U
authors.lastname: Addepally
authors.forename: Y L N
authors.initials: YL
authors.lastname: Murthy
authors.forename: Lakshmi
authors.initials: L
authors.lastname: Velide
authors.forename: Subhabrata
authors.initials: S
authors.lastname: Sen
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D002470:Cell Survival / Q000187:drug effects; D003500:Cyclization; D006571:Heterocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D006801:Humans; D047029:Lactams, Macrocyclic / Q000737:chemistry*; D008745:Methylation; D008826:Microbial Sensitivity Tests; D008958:Models, Molecular; D015394:Molecular Structure; D008970:Molecular Weight; D013141:Spiro Compounds / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D000970:Antineoplastic Agents; D006571:Heterocyclic Compounds; D047029:Lactams, Macrocyclic; D013141:Spiro Compounds