Km. Rai et C. Anjanamurthy, SYNTHESIS OF PODOPHYLLOTOXIN ANALOGS WITH MODIFIED HYDROAROMATIC RING, Indian Journal of Heterocyclic Chemistry, 5(1), 1995, pp. 63-66
Conversion of podophyllotoxone to podophyllohomotoxone and (4- spiroox
ymethylene)-desoxypodophyllotoxin by nitrosomethyl urea and S, S-dimet
hyl-N-(p-toluenesulphenyl) sulfoximine respectively is described. Conv
ersion of beta- apopicropodophyllin to beta-apopicropodophyllone is al
so reported.