Yoshji, Kiyotaka; Ohba, Yoshihiro; Nishiwaki, Tarozaemon published the artcile< β-Ribo- and α-arabinonucleosides containing the 1,2-benzisoxazole and 1,2-benzisothiazole rings>, Quality Control of 21725-69-9, the main research area is benzisoxazole containing ribonucleoside arabinonucleoside; benzisothiazole containing ribonucleoside; ribofuranose condensation benzisoxazole benzisothiazole; arabinofuranose condensation benzisoxazole.
The reaction of the silylated base of 1,2-benzisoxazol-3(2H)-one (I, R = R1 = H, X = O), its 7-Me derivative I (R = Me, R1 = H, X = O), and the 5-methylbenzisothiazolone I (R = H, R1 = Me, X = S), resp., with 1-O-acetyl-2,3,5-tri-O-benzoyl-β-D-ribofuranose followed by basic deprotection gave the corresponding β-D-ribonucleosides II. Similarly, 1-O-acetyl-2,3,5-tri-O-benzoyl-α-D-arabinofuranose reacted with I (R = R1 = H, X = O) in the presence of stannic chloride, to afford the corresponding α-arabinonucleoside III. Structural proofs for these nucleosides are provided from elemental analyses and 1H and 13C NMR spectra.
Journal of Heterocyclic Chemistry published new progress about Glycosylation. 21725-69-9 belongs to class isoxazole, and the molecular formula is C7H5NO2, Quality Control of 21725-69-9.
Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem