M. Shamsuzzaman,"aslam et al., SYNTHESIS OF SUBSTITUTED 1,3-OXATHIANES AND 1,3-OXATHIOLANES, Indian journal of chemistry. Sect. B: organic chemistry, including medical chemistry, 37(1), 1998, pp. 43-47
The synthesis of regioisomeric substituted 1, 3-oxathianes 4, 5, 8, 9,
12 and 13 and 1, 3-oxathiolanes 6, 7, 10, 11, 14 and 15 from the corr
esponding steroidal ketones 1-3, is described.