Diterpenes Isolated from Three Different Plectranthus Sensu Lato Species and Their Antiproliferative Activities against Gynecological and Glioblastoma Cancer Cells

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Authors

GÁBOROVÁ Mária VAGVOLGYI Mate TAYEB Bizhar Ahmed MINORICS Renata ZUPKO Istvan JURČEK Ondřej BENI Szabolcs KUBÍNOVÁ Renata BALOGH Gyorgy Tibor HUNYADI Attila

Year of publication 2024
Type Article in Periodical
Magazine / Source ACS Omega
MU Faculty or unit

Faculty of Pharmacy

Citation
Web https://pubs.acs.org/doi/epdf/10.1021/acsomega.4c00800
Doi http://dx.doi.org/10.1021/acsomega.4c00800
Keywords Coleus; diterpene; glioblastoma; NMR; Plectranthus
Description Fourteen diterpenes were isolated from methanol extracts of the aerial parts of Coleus comosus,Coleus forsteri "Marginatus", and Plectranthus ciliatus. The compounds belong to the abietane (1-4, 9-11, and 13), ent-clerodane (5-8), and ent-kaurane (14, 15) classes. Three new compounds were isolated from C. comosus, including 3-O-acetylornatin G (2), 3,12-di-O-acetylornatin G (3), ornatin B methyl ester (5), and ornatin F (4), for which we proposed a revised structure. The structures of the compounds were determined by comprehensive spectroscopic data analysis. The isolated diterpenes were examined in silico for their physicochemical and early ADME properties. Their antiproliferative effects were determined in vitro using human breast (MDA-MB-231 and MCF-7), cervical (HeLa), and glioblastoma (U-87 MG) cancer cell lines. The royleanone- and hydroquinone-type abietane diterpenes (9-13)exhibited the most potent antiproliferative activity against all cancer cell lines tested, particularly against glioblastoma cells, with IC50 values ranging from 1.1 to 15.6 mu M.
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