Epoxylathyrol Derivatives Modulation of ABCB1-Mediated Multidrug Resistance in Human Colon Adenocarcinoma and Mouse T-Lymphoma Cells /

Epoxyboetirane A (1), a macrocyclic diterpene that was found to be inactive as an ABCB1 modulator, was submitted to several chemical transformations, aimed at generating a series of compounds with improved multidrug resistance (MDR)-modifying activity. Overall, 23 new derivatives were prepared, in a...

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Elmentve itt :
Bibliográfiai részletek
Szerzők: Matos Ana M.
Reis Mariana
Duarte Noélia
Spengler Gabriella
Molnár József
Ferreira Maria-Jose U.
Dokumentumtípus: Cikk
Megjelent: 2015
Sorozat:JOURNAL OF NATURAL PRODUCTS 78 No. 9
doi:10.1021/acs.jnatprod.5b00370

mtmt:2951177
Online Access:http://publicatio.bibl.u-szeged.hu/10421
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520 3 |a Epoxyboetirane A (1), a macrocyclic diterpene that was found to be inactive as an ABCB1 modulator, was submitted to several chemical transformations, aimed at generating a series of compounds with improved multidrug resistance (MDR)-modifying activity. Overall, 23 new derivatives were prepared, in addition to the already reported epoxylathyrol (2) and methoxyboetirol (3). Their anti-MDR potential was assessed through both functional and chemosensitivity assays on resistant human colon adenocarcinoma and human ABCB1-gene transfected L5178Y mouse lymphoma cells. Structure-activity relationship analysis showed that different substitution patterns led to distinct ABCB1 inhibitory activities, although intrinsic cellular characteristics seemed to influence the modulatory behavior. A considerable enhancement in MDR-modifying activity was observed for aromatic compounds in both cell lines, particularly in 3,17-disubstituted esters derived from 3, a Payne-rearranged Michael adduct of 2. All compounds tested were revealed to interact synergistically with doxorubicin, and ATPase inhibition by three representative MDR-modifying compounds was also investigated. On account of its outstanding ABCB1 inhibitory activity at 0.2 muM and overall remarkable bioactive profile, methoxyboetirane B (22) was found to be a new promising lead for MDR-reversing anticancer drug development. 
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700 0 1 |a Duarte Noélia  |e aut 
700 0 1 |a Spengler Gabriella  |e aut 
700 0 1 |a Molnár József  |e aut 
700 0 1 |a Ferreira Maria-Jose U.  |e aut 
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