Synthesis and Chemistry of Quinone Methide Models for the Anthracycline Antitumor Antibiotics
摘要:
In an effort to further understand the chemistry of anthracycline-type quinone methides, two tetracyclic o-quinone methides, 4,5,12-trimethoxy-11-[(trimethylacetyl)oxy]-3-9,10-dihydro-6(2H)-naphthacenone (19) and (+/-)-9-carbomethoxy-4,5,12-trimethoxy-11-[(trimethylacetyl)oxy]-9,10-di-hydro-6(2H)-naphthacenone (20), were synthesized, and their reaction with several nucleophiles was investigated. Carbon-and sulfur-based nucleophiles afforded stable adducts while oxygen-and nitrogen-based nucleophiles afforded unstable adducts due to the reversibility of the addition. Adducts of 19 with ethanol and O-silylated adenosine (27) were acetylated to afford stable phenol acetates 21 and 29, respectively.
Synthesis and Chemistry of Quinone Methide Models for the Anthracycline Antitumor Antibiotics
摘要:
In an effort to further understand the chemistry of anthracycline-type quinone methides, two tetracyclic o-quinone methides, 4,5,12-trimethoxy-11-[(trimethylacetyl)oxy]-3-9,10-dihydro-6(2H)-naphthacenone (19) and (+/-)-9-carbomethoxy-4,5,12-trimethoxy-11-[(trimethylacetyl)oxy]-9,10-di-hydro-6(2H)-naphthacenone (20), were synthesized, and their reaction with several nucleophiles was investigated. Carbon-and sulfur-based nucleophiles afforded stable adducts while oxygen-and nitrogen-based nucleophiles afforded unstable adducts due to the reversibility of the addition. Adducts of 19 with ethanol and O-silylated adenosine (27) were acetylated to afford stable phenol acetates 21 and 29, respectively.
Synthesis and Chemistry of Quinone Methide Models for the Anthracycline Antitumor Antibiotics
作者:Steven R. Angle、Jon D. Rainier、Catherine Woytowicz
DOI:10.1021/jo970539o
日期:1997.8.1
In an effort to further understand the chemistry of anthracycline-type quinone methides, two tetracyclic o-quinone methides, 4,5,12-trimethoxy-11-[(trimethylacetyl)oxy]-3-9,10-dihydro-6(2H)-naphthacenone (19) and (+/-)-9-carbomethoxy-4,5,12-trimethoxy-11-[(trimethylacetyl)oxy]-9,10-di-hydro-6(2H)-naphthacenone (20), were synthesized, and their reaction with several nucleophiles was investigated. Carbon-and sulfur-based nucleophiles afforded stable adducts while oxygen-and nitrogen-based nucleophiles afforded unstable adducts due to the reversibility of the addition. Adducts of 19 with ethanol and O-silylated adenosine (27) were acetylated to afford stable phenol acetates 21 and 29, respectively.