Abstract Condensation of bis-(2-chloroethyl) phosphoramidic dichloride with 3′-amino-3′- deoxy-N, N-dimethyladenosine afforded the 2′, 3′-cyclicphosphorodiamidate (III). By an improved synthesis, methyl 3-amino-3-deoxy-β-D-ribofuranoside was obtained as a model compound for conversion to the analogous 2, 3-cyclicphosphorodiamidate (XII). Existence of the latter as two diastereomers due to phosphorus asymmetry was shown by nmr analysis, ...
![Furo[3,4-d]-1,3,2-oxazaphosphole-4-methanol,2-[bis(2-chloroethyl)amino]hexahydro-6-methoxy-, 2-oxide (8CI) Structure](https://image.chemsrc.com/caspic/236/29781-54-2.png)