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Synthesis and Biological Evaluation of PF-543 Derivative Containing Aliphatic Side Chain.

Abstract
The PF-543 is known as a potent and selective inhibitor of sphingosine kinase (SK) 1 amongst all the SK inhibitors known to date. In a recently reported study by Pfizer on the synthesis of PF-543 derivatives and the SK inhibitory effects, the introduction of propyl moiety into sulfonyl group of PF-543 in the case of 26b revealed an excellent result of 1.7 nM of IC50 of SK1, suggesting the potential substitution of chain structure for benzenesulfonyl structure. In the present work, we aimed for identification of antitumor activity and inhibitory effects of PF-543 derivative containing aliphatic long chain (similar to known SK inhibitors) on SK1. The synthesized compound 2 exhibited an inhibitory effect on SK1 in a manner similar to that of PF-543; the PF-543 derivative manifested similar antitumor activity on HT29, HCT116 (colorectal cancer cell line), and AGS (gastric cancer cell line) cells. Also, from the docking study conducted with PF-543 and compound 2, it was apparent that the aliphatic chain in compound 2 could probably replace benzenesulfonyl structure of PF-543.
AuthorsSeon Woong Kim, Taeho Lee, Yoon Sin Oh, Sang Mi Shin, Joo-Youn Lee, Sanghee Kim, Dong Jae Baek, Eun-Young Park
JournalChemical & pharmaceutical bulletin (Chem Pharm Bull (Tokyo)) Vol. 67 Issue 6 Pg. 599-603 ( 2019) ISSN: 1347-5223 [Electronic] Japan
PMID31155566 (Publication Type: Journal Article)
Chemical References
  • Antineoplastic Agents
  • PF-543
  • Pyrrolidines
  • Sulfones
  • Phosphotransferases (Alcohol Group Acceptor)
  • sphingosine kinase
  • Methanol
Topics
  • Antineoplastic Agents (chemical synthesis, chemistry, pharmacology)
  • Binding Sites
  • Catalytic Domain
  • Cell Line, Tumor
  • Cell Survival (drug effects)
  • Humans
  • Inhibitory Concentration 50
  • Methanol
  • Molecular Docking Simulation
  • Phosphotransferases (Alcohol Group Acceptor) (antagonists & inhibitors, metabolism)
  • Pyrrolidines (chemical synthesis, chemistry, pharmacology)
  • Structure-Activity Relationship
  • Sulfones (chemical synthesis, chemistry, pharmacology)

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