title: Anti-cancer activity of carbamate derivatives of melampomagnolide B.
abstract: Melampomagnolide B (MMB) is a natural sesquiterpene structurally related to parthenolide (PTL). We have shown that MMB exhibits anti-leukemic properties similar to PTL. Unlike PTL, the presence of a primary hydroxyl group in the MMB molecule allows the opportunity for examining the biological activity of a variety of conjugated analogs of MMB. We have now synthesized a series of carbamate analogs of MMB and evaluated these derivatives for anti-cancer activity against a panel of sixty human cancer cell lines. Analogs 6a and 6e exhibited promising anti-leukemic activity against human leukemia cell line CCRF-CEM with GI50 values of 680 and 620 nM, respectively. Analog 6a also showed GI50 values of 1.98 and 1.38 μM respectively, against RPMI-8226 and SR leukemia cell lines and GI50 values of 460 and 570 nM against MDA-MB-435 melanoma and MDA-MB-468 breast cancer cell lines, respectively. Analog 6e had GI50 values of 650 and 900 nM against HOP-92 non-small cell lung and RXF 393 renal cancer cell lines.
authors.affiliation: Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
authors.forename: Venumadhav
authors.initials: V
authors.lastname: Janganati
authors.affiliation: Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
authors.forename: Narsimha Reddy
authors.initials: NR
authors.lastname: Penthala
authors.affiliation: Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
authors.forename: Nikhil Reddy
authors.initials: NR
authors.lastname: Madadi
authors.affiliation: Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Chen
authors.affiliation: Department of Pharmaceutical Sciences, College of Pharmacy, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA. Electronic address: pacrooks@uams.edu.
authors.forename: Peter A
authors.initials: PA
authors.lastname: Crooks
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D002219:Carbamates / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D015394:Molecular Structure; D012717:Sesquiterpenes / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D013329:Structure-Activity Relationship; D020903:Tanacetum parthenium / Q000737:chemistry
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D002219:Carbamates; D012717:Sesquiterpenes; C558241:melampomagnolide B
keywords: Anti-cancer activity; Carbamates; Heterocyclic amines; Melampomagnolide B; Parthenolide