AI Article Synopsis
- Researchers isolated a new labdane diterpenoid, 3-(acetyloxy)-acetylisocupressic acid, along with other compounds from K. Koch leaves using a method focused on cytotoxicity.
- The new compound showed no effectiveness against HepG2 cancer cells or protease enzymes, while isocupressic acid demonstrated significant cytotoxicity compared to the chemotherapy drug cisplatin.
- Binding affinity studies indicated that the new compound had better interaction with the CDK1 protein involved in the cell cycle compared to isocupressic acid, suggesting its potential as a focus for further research.
Article Abstract
Cytotoxicity-guided purification of K. Koch leaves (Cupressaceae) led to the isolation of a new labdane diterpenoid, 3-(acetyloxy)-acetylisocupressic acid (), together with isocupressic acid (), 3,4-dimethoxycinnamoyl alcohol () and deoxypodophyllotoxin (). The chemical structures of were established by detailed 1D and 2D NMR, HRFAB-MS and LRESI-MS, as well as by comparing the spectral data with those reported in the literature. Compound was ineffective against HepG2 cells and protease enzyme, while showed potent cytotoxicity against HepG2 cells (IC of 3.73 μg/mL) compared to cisplatin (IC of 12.65 μg/mL). Computational analyses with CDK1 protein (a prominent protein in the cell cycle of HepG2 cells) revealed the binding affinity of (-31.86 kcal/mol) was better than (-19.70 kcal/mol) because the acetoxy groups did not allow binding deeply to the ATP binding site. Compounds and moderately inhibited the protease activity (IC = 52.7 and 63.0 μg/mL, respectively). Further and studies on the plant are strongly recommended.
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| http://dx.doi.org/10.1080/14786419.2024.2323542 | DOI Listing |
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