The structures of methyl 5-deoxy-2,3-O-isopropylidene-5-C-R3Sn-beta-D-ribof
uranosides (3), [5-O-(methyl 2,3-O-isopropylidene-beta-D-ribofuranosyl)meth
yl](n)RmR'((4-m-n)) stannanes (4) and 3-triphenylstannylpropyl 2,3-O-isopro
pylidene-beta-D-ribofuranoside (5) have been investigated.