Doubly Homologated Dihalovinyl and Acetylene Analogues of Adenosine: Synthesis, Interaction with <i>S-</i>Adenosyl-<scp>l</scp>-homocysteine Hydrolase, and Antiviral and Cytostatic Effects
作者:Stanislaw F. Wnuk、Carlos A. Valdez、Jahanzeb Khan、Priscilla Moutinho、Morris J. Robins、Xiaoda Yang、Ronald T. Borchardt、Jan Balzarini、Erik De Clercq
DOI:10.1021/jm990486y
日期:2000.3.1
Treatment of the 6-aldehyde derived by Moffatt oxidation of 3-O-benzoyl-1,2-O-isopropylidene-alpha-D-ribo-hexofuranose (2c) with the dibromo- or bromofluoromethylene Wittig reagents generated in situ with tetrabromomethane or tribromofluoromethane, triphenylphosphine, and zinc gave the dihalomethyleneheptofuranose analogues 3b and 3d, respectively. Acetolysis, coupling with adenine, and deprotection
用四溴甲烷或三溴氟甲烷原位生成的二溴或溴氟亚甲基Wittig试剂处理3-O-苯甲酰基-1,2-O-异亚丙基-α-D-核糖-呋喃糖(2c)的Moffatt氧化衍生的6-醛,三苯基膦和锌分别给出了二卤代亚甲基庚呋喃糖类似物3b和3d。乙酰解,与腺嘌呤偶联和脱保护得到9-(7,7-二溴-5,6,7-三苯氧基-β-D-核糖-庚-6-呋喃呋喃糖基)腺嘌呤(5a)或其溴氟类似物5b。用过量的丁基锂处理5a,得到炔属衍生物9-(5,6,7-三甲氧基-β-D-核糖庚烷-6-呋喃呋喃糖基)腺嘌呤(6)。将双重同源的乙烯基卤化物5a和5b以及炔属6腺嘌呤核苷设计为“水解活性”的假定底物 -腺苷-L-高半胱氨酸(AdoHcy)水解酶的合成。将AdoHcy水解酶与5a,5b和6一起孵育会导致该酶的时间和浓度依赖性失活(K(i):分别为8.5 +/- 0.5、17 +/- 2和8.6 +/- 0.5 microM