| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | benzyl 2,3-O-isopropylidene-β-L-xylopyranoside | 478175-66-5 | C15H20O5 | 280.321 |
| —— | benzyl 4-O-(imidazol-1-ylsulfonyl)-2,3-O-isopropylidene-β-L-xylopyranoside | 478175-76-7 | C18H22N2O7S | 410.448 |
| —— | benzyl β-L-xylopyranoside | 478175-99-4 | C12H16O5 | 240.256 |
| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | benzyl 4-C-cyano-4-deoxy-α-D-arabinoside | 770735-90-5 | C13H15NO4 | 249.266 |
| —— | benzyl 4-{[(tert-butoxycarbonyl)amino]methyl}-4-deoxy-2,3-O-isopropylidene-α-D-arabinoside | 478175-80-3 | C21H31NO6 | 393.48 |
| —— | (2R,3S,4R,5R)-5-(aminomethyl)-2-phenylmethoxyoxane-3,4-diol | 1026939-30-9 | C13H19NO4 | 253.298 |
| —— | benzyl 4C-[(tert-butoxycarbonyl)amino]methyl-4-deoxy-α-D-arabinopyranoside | 478175-82-5 | C18H27NO6 | 353.415 |
Improvements in the preparation of a key imidazylate and the reduction of the derived nitrile have led to more efficient syntheses of isofagomine, noeuromycin, azafagomine, and isofagomine lactam. As well, a precursor of azafagomine has been converted into azanoeuromycin, and the nitrogen atom of isofagomine has been incorporated into a guanidine residue.
Benzyl 4-cyano-4-deoxy-α-D-arabinoside was converted into both its2,3-di-O-acetyl and 2,3-di-O-(tert-butyldimethylsilyl)derivatives. The latter, by a process of hydrogenolysis, oxidation, and methanolysis, gave methyl2,3-di-O-(tert-butyldimethylsilyl)-4-cyano-4-deoxy-D-arabinonate. Reductionof this methyl ester with borane dimethyl sulfide gave, after deprotection, isofagomine lactam.