Research Journal of Pharmacy and Technology

SCOPUS
  • Year: 2019
  • Volume: 12
  • Issue: 1

Alkaloids from Popowia perakensis King and their potential as Dipeptidyl peptidase IV (DPP IV) inhibitors

  • Author:
  • Saripah Salbiah Syed Abdul Azziz1,, Mat Ropi Mukhtar2, A. Hamid A. Hadi2, Yuhanis Mhd Bakri1, Ahmed Kareem Obaid Aldulaimi1, Khalijah Awang2, Yumi Zuhanis Has-Yun Hashim3
  • Total Page Count: 4
  • Page Number: 113 to 116

1Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, 35900, Tanjong Malim, Perak, Malaysia

2Department of Chemistry, Faculty of Science, Universiti of Malaya, 50603, Kuala Lumpur, Malaysia

3Department of Biotechnology Engineering, Kulliyyah of Engineering, International Islamic University Malaysia, P.O. Box 10, 50728, Kuala Lumpur, Malaysia

Abstract

A study on the alkaloidal composition on the Malaysian Annonaceae species, i.e Popowia perakensis King has been carried out. Barks of Popowia perakensis were extracted with hexane, dichloromethane and methanol, respectively. Dichloromethane extract further underwent the acid base treatment to give the alkaloidal crude extract. Isolation of compounds was carried out using various chromatography techniques including column chromatography and thin layer chromatography. Spectroscopic methods notably 1H, 13C NMR, IR, UV and GC-MS spectroscopy were utilized to identify pure compounds in addition to comparison of reported data. Two azaanthraquinones alkaloids namely cleistopholine 1 and 6-methoxycleistopholine 2 together with simple isoquinolone alkaloid, N-methylcorydaldine 3 had been isolated. All three alkaloids are known but they were isolated for the first time from this species. Cleistopholine 1 was tested for Dipeptidyl peptidase IV (DPP IV) inhibition to investigate its potential antidiabetic activities. Results revealed that this compound showed quite weak (6.26%) inhibitory activities as compared to the positive control, Diprotin A (81.46%). The quantity of the other two compounds was insufficient for the screening purposes.

Keywords

Popowia perakensis King, Annonaceae, azaanthraquinones, simple isoquinolone, DPP IV activity