Synthesis of [4,5-Bis(hydroxymethyl)-1,3-dithiolan-2-yl]nucleosides as Potential Inhibitors of HIV1
摘要:
The synthesis of [4,5-bis(hydroxymethyl)-1,3-dithiolan-2-yl]nucleosides is described. (2S,3S)-1,2: 3,4-Diepoxybutane (13) was reacted with potassium thiocyanate to give (2R,3R)-1,2:3,4-diepithiobutane (14). Thiiranering opening with acetate followed by deacetylation gave (2R,3R)-2,3-dithiothreitol (19) which was silylated and treated with trimethyl orthoformate to give the 2-methoxy-1,3-dithiolane 20. Condensation of 20 with silylated thymine, uracil, N-4-benzoylcytosine and 6-chloropurine using a modified Vorbruggen procedure, followed by deprotection, gave the nucleoside analogues. Compounds 26, 28, and 30 were found to be inactive when tested for anti-HIV activity in vitro.
La反应a lieu en 3 etapes pour conduire a un thiocarboxylate de mercapto-2ethyle, ce quimet en jeu l'ion dithiolanne-1,3ium-2 et le dithiolanne-1,3ol-2 comme intermediaires
Synthese der 2-Methyl-lysergsäure Eine neue<i>Friedel</i>-<i>Crafts</i>-Methode. 74. Mitteilung über Mutterkornalkaloide
作者:P. Stütz、P. A. Stadler
DOI:10.1002/hlca.19720550111
日期:1972.1.31
AbstractThe new reagent 2‐methoxy‐1,3‐dithiolane and cyclic ortho‐thioesters can be used in a new reaction of the Friedel‐Crafts type to introduce the corresponding aldehydic or ketonic thioacetal function directly into substrates containing an indole nucleus with free 2‐ or 3‐position.
Cyclic orthoester functions as new protecting groups in nucleosides