RRC ID 79356
Author Quan HJ, Koyanagi J, Hagiwara K, Cui XR, Isshiki Y, Kondo S, Komada F, Saito S.
Title Reactions of 26-iodopseudodiosgenin and 26-iodopseudodiosgenone with various nucleophiles and pharmacological activities of the products.
Journal Chem Pharm Bull (Tokyo)
Abstract 26-Iodopseudodiosgenin (8) and 26-iodopseudodiosgenone (9) were reacted with various nucleophiles (KSCN, KOCN, NaCN, NaN(3) and various amines) to give pseudodiosgenin derivatives (4, 12, 16-20, 26) and pseudodiosgenone derivatives (5, 13, 21-25, 27), respectively. The reactions of 8 and 9 with KOCN gave the elimination products (10) and (11), respectively. The reaction of 9 with NaCN gave 5alpha,26- (14) and 5beta,26-dicyanocholestan-3-one (15). The reaction of 8 with NaN3 gave triazepine derivative (30), while that of 9 gave 26-azidopseudodiosgenone (31). Compound 31 was converted into triazepine derivative (32) by heating at 120 degrees C. The cytotoxicity of the pseudodiosgenins and pseudodiosgenones on P-gp-underexpressing HCT 116 cells and P-gp-overexpressing Hep G2 cells was examined by MTT assay. Pseudodiosgenins 2, 4, 12 and 30 showed strong cytotoxic activity (IC50 values: 2.6+/-0.3-6.7+/-1.4 microM), as did pseudodiosgenones 3, 5, 11, 13, 21-25 and 27 (IC50 values: 1.3+/-0.3-6.4+/-0.3 microM) toward HCT 116 cells. Pseudodiosgenins 12, 16 and 30 (IC50 values: 1.2+/-0.7-2.2+/-0.6 microM) and pseudodiosgenones 22, 23, 25 and 27 (IC50 values: 0.6+/-0.1-2.5+/-0.3 microM) were highly cytotoxic to Hep G2 cells. Compounds 3 and 27 showed efficient antibacterial activity (MIC: 15.6, 10.4 microg/ml) and (MIC: 7.8, 15.6 microg/ml) against Bacillus subtilis and Staphylococcus aureus, respectively.
Volume 54(1)
Pages 72-9
Published 2006-1-1
DOI 10.1248/cpb.54.72
PII JST.JSTAGE/cpb/54.72
PMID 16394553
MeSH Anti-Bacterial Agents / chemistry* Anti-Bacterial Agents / pharmacology* Antifungal Agents / chemistry* Antifungal Agents / pharmacology* Antineoplastic Agents, Phytogenic / chemistry* Antineoplastic Agents, Phytogenic / pharmacology* Bacteria / drug effects Carbohydrate Conformation Carbohydrate Sequence Diosgenin / analogs & derivatives* Diosgenin / chemical synthesis Diosgenin / pharmacology Drug Screening Assays, Antitumor Fungi / drug effects Humans Indicators and Reagents Microbial Sensitivity Tests Molecular Sequence Data Saponins / chemistry*
IF 1.416
Resource
Human and Animal Cells Hep G2(RCB0459)