Title:In vitro, In vivo and In silico Antihyperglycemic Activity of Some Semi-Synthetic Phytol Derivatives
Volume: 18
Issue: 1
Author(s): Harish C. Upadhyay, Akansha Mishra, Jyotsana Pandey, Pooja Sharma, Akhilesh K. Tamrakar, Arvind K. Srivastava, Feroz Khan and Santosh K. Srivastava*
Affiliation:
- Medicinal Chemistry Department, CSIR-Central Institute of Medicinal and Aromatic Plants, P.O.- CIMAP, Lucknow- 226015,India
Keywords:
Phytol, diabetes, semi-synthesis, docking studies, PPARγ, ADMET.
Abstract:
Background: Due to the prevalence of type-2 diabetes across the globe, there is an unmet
need to explore new molecular targets for the development of cost-effective and safer antihyperglycemic
agents.
Objective: Structural modification of phytol and evaluation of in vitro, in vivo and in silico antihyperglycemic
activity of derivatives establishing the preliminary structure activity relationship (SAR).
Methods: The semi-synthetic derivatives of phytol were prepared following previously described
methods. The antihyperglycemic potential was measured in vitro in terms of increase in 2-
deoxyglucose (2-DG) uptake by L-6 rat skeletal muscle cells as well as in vivo in sucrose-loaded
(SLM) and streptozotocin (STZ)-induced diabetic rat models. The blood glucose profile was measured
at 30, 60, 90, 120, 180, 240, 300 and 1440 min post administration of sucrose in rats. The in
silico docking was performed on peroxisome proliferator-activated receptor gamma (PPARγ) as antidiabetic
target along with absorption, distribution, metabolism, excretion and toxicity (ADMET)
studies.
Results: Nine semi-synthetic ester derivatives: acetyl (1), lauroyl (2), palmitoyl (3), pivaloyl (4),
trans-crotonyl (5), benzoyl (6), m-anisoyl (7), 3,4,5-trimethoxy benzoyl (8) cinnamoyl (9) along with
bromo derivative (10) of phytol were prepared. The derivatives 9, 8 and 2 caused 4.5, 3.2 and 2.7
times more in vitro uptake of 2-DG respectively than rosiglitazone (ROSI). The derivatives showed
significant improvement in oral glucose tolerance both in SLM (29.6-21%) as well as STZ-induced
diabetic (30.8-19.0%) rats. The in silico ADMET, docking studies showed non-toxicity and high
binding affinity with PPARγ.
Conclusion: The potent antihyperglycemic activity with favorable pharmacokinetics supports phytol
derivatives as a suitable antidiabetic lead.