Lipophilic, Acid-Stable, Adenosine Deaminase-Activated Anti-HIV Prodrugs for Central Nervous System Delivery. 2. 6-Halo- and 6-Alkoxy Prodrugs of 2'-.beta.-Fluoro-2',3'-dideoxyinosine
作者:Harry Ford、Maqbool Siddiqui、John S. Driscoll、Victor E. Marquez、James A. Kelley、Hiroaki Mitsuya、Takuma Shirasaka
DOI:10.1021/jm00007a015
日期:1995.3
and 6-alkoxy-(OMe-, OEt-) 9-(2,3-dideoxy-2-fluoro-beta-D-threopentofuranosyl) purines (F-ddN) have been synthesized and characterized with the objective of finding compounds which might be superior to existing drugs for the treatment of HIV in the central nervous system. These compounds, which contain lipophilic 6-substituents, were chosen as acid-stable prodrugs for the anti-HIV-active F-ddN, 9-(2,3
一系列6卤代(F-,Cl-,Br-,I-)和6-烷氧基-(OMe-,OEt-)9-(2,3-二脱氧-2-氟-β-D-叔戊基呋喃糖基)嘌呤(F-ddN)已被合成和表征,目的是发现在中枢神经系统中治疗HIV可能优于现有药物的化合物。这些含有亲脂性6位取代基的化合物被选作抗HIV活性F-ddN,9-(2,3-二脱氧-2-氟-β-D-苏-五呋喃糖基)次黄嘌呤的酸稳定前药(F-ddI),因为相对于F-ddI,它们具有增加血脑屏障渗透的潜力。所有新化合物均比目前批准的抗艾滋病药物更具亲脂性。相对于二羟肌苷(ddI),对于6-氯-和6-乙氧基类似物,分配系数增加了30倍和110倍。2' -氟取代消除了pH 1,核苷糖基键的酸催化裂解。然而,在pH 1时,观察到6-氟取代基的酸催化水解产生F-ddI的速率约为t1 / 2(0.54 h)。比其他前药快40-170倍。F-ddN作为F-ddI的前药的效用取决