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 Semisynthetic analogs of Buxus alkaloids

V. Paulík, B. Proksa, D. Uhrín, A. Vadkerti, and Z. Votický

Institute of Chemistry, Centre for Chemical Research, Slovak Academy of Sciences, CS-84238 Bratislava

 

Abstract: 3 ß-Acetoxy-20-oxopregna-5,16-diene reacted with methyl nitroacetate in the presence of acetic acid and ammonium acetate to afford 3ß-acetoxy-16α-(1 -nitro-1 -methoxycarbonylmethyl)-20-oxopregn-5-ene, 3ß-acetoxy-16α-nitromethyl-20-oxopregn-5-ene, (24S)-3ß-acetoxy-22-aza-23-oxo-24-nitro-16,24-cyclochola-5,17-diene, and 3ß-acetoxy-22-aza-23-hydroxy-24-nitro-16,24-cyclochola-5,17,22,24-tetraene. The latter originated from the former in the presence of alumina.

Full paper in Portable Document Format: 421a97.pdf

 

Chemical Papers 42 (1) 97–103 (1988)

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