title: Synthesis of new cis-fused tetrahydrochromeno[4,3-b]quinolines and their antiproliferative activity studies against MDA-MB-231 and MCF-7 breast cancer cell lines.
abstract: New cis-fused tetrahydrochromeno[4,3-b]quinolines have been synthesized by intramolecular [4+2] imino-Diels-Alder reactions of 2-azadienes derived in situ from aromatic amines and 7-O-prenyl derivatives of 8-formyl-2,3-disubstituted chromenones in the presence of 20mol% Yb(OTf)(3) in acetonitrile under reflux conditions in good to excellent yields. The structures were established by spectroscopic data and further confirmed by X-ray diffraction analysis. These compounds were evaluated for their antiproliferative activity against MDA-MB-231 and MCF-7 breast cancer cells. The results showed that compounds 3e, 3f, and 3k exhibit significant antiproliferative activity against MCF-7 breast cancer cells and low inhibitory activity against MDA-MB-231 breast cancer cell lines. Compound 3h displayed activity as comparable to tamoxifen on both the cell lines.
authors.affiliation: Division of Organic Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India. nagaiah@iict.res.in
authors.forename: K
authors.initials: K
authors.lastname: Nagaiah
authors.forename: A
authors.initials: A
authors.lastname: Venkatesham
authors.forename: R
authors.initials: R
authors.lastname: Srinivasa Rao
authors.forename: V
authors.initials: V
authors.lastname: Saddanapu
authors.forename: J S
authors.initials: JS
authors.lastname: Yadav
authors.forename: S J
authors.initials: SJ
authors.lastname: Basha
authors.forename: A V S
authors.initials: AV
authors.lastname: Sarma
authors.forename: B
authors.initials: B
authors.lastname: Sridhar
authors.forename: A
authors.initials: A
authors.lastname: Addlagatta
mesh_terms: D001943:Breast Neoplasms / Q000473:pathology*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects*; D005260:Female; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D011804:Quinolines / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D014961:X-Ray Diffraction
chemical_list: D011804:Quinolines