An improved synthesis of benzyl 3,5-di- O -benzyl-2-deoxy-1,4-dithio- d - erythro -pentofuranoside, an intermediate in the synthesis of 4′-thionucleosides
p-octyloxyphenylmethanethiol and p-dodecylbenzenethiol were prepared as new odorless organosulfur reagents. Thiosugars and thioglycosides were synthesized using these reagents without encountering any malodorous procedures.
The Synthesis and Biological Activity of Certain 4'-Thionucleosides
作者:John Secrist、William Parker、Kamal Tiwari、Lea Messini、Sue Shaddix、Lucy Rose、L. Lee Bennett、John Montgomery
DOI:10.1080/15257779508012449
日期:1995.5.1
Abstract Results are presented on the synthesis and biologicalactivity of several types of 4′-thionucleosides as potential anticancer agents. Detailed studies on the mechanism of action of 4′-thiothymidine are also presented.
Synthesis of 4-thiofuranoid 1,2-glycals and their application to stereoselective synthesis of 4′-thionucleosides
作者:J.Allen Miller、Ashley W Pugh、G.Mustafa Ullah
DOI:10.1016/s0040-4039(00)00366-x
日期:2000.4
Convenient one-pot procedures using iodine monochloride have been developed for the preparation of two 4-thio-1,2-glycals from readily available starting materials and for their beta-anomer selective conversion into 2'-iodo-4'-thionucleosides. Conditions for the reductive de-iodination of these iodonucleosides have been established and hence routes to a range of 2'-deoxy-4'-thionucleosides become feasible. (C) 2000 Elsevier Science Ltd. All rights reserved.
The Synthesis and Biological Activity of 1-(2-Deoxy-4-Thio-α;-L-Threo-Pentofuranosyl)Thymine
作者:Kamal N. Tiwari、John A. Montgomery、John A. Secrist
DOI:10.1080/07328319308018554
日期:1993.9
The procedure of Huang and Hui (Nucleosides & Nucleotides 1993, 12, 139-147) was found to give benzyl 3,5-di-O-benzyl-2-deoxy-1,4-dithio-alpha-L-threo-pentofuranoside (6) rather than the claimed D-erythro isomer. This sugar was converted to an anomeric mixture of the thymine nucleosides. The mixture was separated and the alpha-anomer (alpha-10) was found to be cytotoxic, whereas the beta-anomer (beta-10) was inactive.