RRC ID 69538
Author Nishimura Y, Kikuchi H, Kubo T, Arai R, Toguchi Y, Yuan B, Sunaga K, Cho H.
Title Synthesis of 4,4-Disubstituted 3,4-Dihydropyrimidin-2(1H)-ones and -thiones, the Corresponding Products of Biginelli Reaction Using Ketone, and Their Antiproliferative Effect on HL-60 Cells.
Journal Chem Pharm Bull (Tokyo)
Abstract An efficient synthetic method for novel 4,4-disubstituted 3,4-dihydropyrimidin-2(1H)-ones 5 and -thiones 6 was developed. The cyclocondensation reaction of O-methylisourea hemisulfate salt 11 with 8 gives a tautomeric mixture of dihydropyrimidines 12 and 13 following acidic hydrolysis of the cyclized products to produce 5 in high yields. Thionation reaction of 5 at the 2-position smoothly proceeds to give 2-thioxo derivatives 6. These compounds 5 and 6, corresponding to the products of a Biginelli-type reaction using urea or thiourea, a ketone and a 1,3-dicarbonyl compound, have long been inaccessible and hitherto unavailable for medicinal chemistry. These methods are invaluable for the synthesis of 5 and 6, which have been inaccessible by conventional methods. Therefore, the synthetic methods established in this study will expand the molecular diversity of their related derivatives. These compounds were also assessed for their antiproliferative effect on a human promyelocytic leukemia cell line, HL-60. Treatment of 10 µM 6b and 6d showed high inhibitory activity similarly to 1 µM all-trans retinoic acid (ATRA), indicating that the 2-thioxo group and length of two alkyl substituents at the 4-position are strongly related to activity.
Volume 70(2)
Pages 111-119
Published 2022-1-1
DOI 10.1248/cpb.c21-00794
PMID 35110431
MeSH Antineoplastic Agents / chemical synthesis Antineoplastic Agents / chemistry Antineoplastic Agents / pharmacology* Cell Proliferation / drug effects Cell Survival / drug effects Dose-Response Relationship, Drug Drug Screening Assays, Antitumor HL-60 Cells Humans Ketones / chemistry Ketones / pharmacology* Molecular Structure Pyrimidinones / chemical synthesis Pyrimidinones / chemistry Pyrimidinones / pharmacology* Structure-Activity Relationship Thiones / chemical synthesis Thiones / chemistry Thiones / pharmacology*
IF 1.416
Resource
Human and Animal Cells HL-60(RCB3683)