Design, synthesis and antibacterial evaluation of 3-substituted ocotillol-type derivatives

Kai Yi Wang, Zhi Wen Zhou, Heng Yuan Zhang, Yu Cheng Cao, Jin Yi Xu, Cong Ma, Qing Guo Meng, Yi Bi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

7 Citations (Scopus)


Antibiotic resistance has become a serious global problem that threatens public health. In our previous work, we found that ocotillol-type triterpenoid saponin showed good antibacterial activity. Based on preliminary structure-activity relationship, novel serious C-3 substituted ocotillol-type derivatives 7–26 were designed and synthesized. The in vitro antibacterial activity was tested on five bacterial strains (B. subtilis 168, S. aureus RN4220, E. coli DH5α, A. baum ATCC19606 and MRSA USA300) and compared with the tests on contrast. Among these derivatives, C-3 position free hydroxyl substituted compounds 7–14, showed good antibacterial activity against Gram-positive bacteria. Furthermore, compound 22 exhibited excellent antibacterial activity with minimum inhibitory concentrations (MIC) values of 2 µg/mL against MRSA USA300 and 4 µg/mL against B. subtilis. The structure-activity relationships of all current ocotillol-type derivatives our team synthesised were summarized. In addition, the prediction of absorption, distribution, metabolism, and excretion (ADME) properties and the study of pharmacophores were also conducted. These results can provide a guide to further design and synthesis works.

Original languageEnglish
Article number3320
Issue number12
Publication statusPublished - 14 Dec 2018


  • Antibacterial activity
  • Ocotillol
  • Structure-activity relationship
  • Synthesis
  • Triterpenoid saponin

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemistry (miscellaneous)
  • Molecular Medicine
  • Pharmaceutical Science
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry


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