A Practical Synthesis of (1<i>S</i>,2<i>R</i>)-1-Amino-2-indanol, a Key Component of HIV Protease Inhibitor, Indinavir
作者:Hiroshi Kajiro、Shu-ichi Mitamura、Atsunori Mori、Tamejiro Hiyama
DOI:10.1055/s-1998-3126
日期:1998.1
The synthesis of (1S,2R)-1-amino-2-indanol, a key component of HIV protease inhibitor, is accomplished in eight steps from d-phenylalanine. The starting material is converted into 2-acetoxy-1-indanone in four steps involving intramolecular Friedel-Crafts cyclization. The stereochemically labile α-acetoxy ketone is hydrolyzed to 2-hydroxy-1-indanone using a catalytic amount of scandium triflate without any loss of the optical purity. Diastereoselective hydrogenation of α-hydroxy oxime, derived from the α-hydroxy ketone, gives the amino alcohol in 96% cis-selectivity. Optical purity of the starting material is perfectly retained throughout the transformations.
(1S,2R)-1-氨基-2-茚醇的合成作为HIV蛋白酶抑制剂的关键成分,通过八个步骤从D-苯丙氨酸合成而成。起始材料经过四步反应,转化为2-乙氧基-1-茚酮,过程中涉及分子内弗里德尔-克拉夫循环反应。立体化学不稳定的α-乙氧基酮在催化量氟化铈存在下水解为2-羟基-1-茚酮,且未损失任何光学纯度。从α-羟基酮派生的α-羟基肟的立体选择性氢化反应以96%的顺式选择性得到氨基醇。整个反应过程中,起始材料的光学纯度得到了完美保留。