Condensation of glucosides of podophyllotoxin 4 and 4'-demethylpodophyllotoxin 5 with diethyl acetal in dry nitromethane and thiophene-2-carboxaldehyde yield the corresponding acetals namely, isoetoposide methyl ether 6, isoetoposide 7 and isoteniposide 8.
Anand, S. M.,Jain, S. M.
p. 391 - 393
(2007/10/03)
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