Re-Evaluation of P-Chiral, N-Phosphoryl Sulfonamide Brønsted Acids in the Asymmetric Synthesis of 1,2,3,4-Tetrahydroquinoline-2-Carboxylate Esters via Biomimetic Transfer Hydrogenation
作者:Ifenna I Mbaezue、Filip Topic、Youla S Tsantrizos
DOI:10.1055/a-2047-8301
日期:——
Enantioenriched heterocyclic and rigidified bioisosteres of aminoacids are valuable building blocks in drug discovery, particularly in the design of peptidomimetic drugs. The rigidified bioisostere of phenylalanine, 1,2,3,4-tetrahydroquinoline-2-carboxylic acid, is found in several biologically active compounds. However, only a small number of successful methodologies have been reported for its asymmetric
氨基酸的对映体富集杂环和刚性生物电子等排物是药物发现的重要组成部分,特别是在拟肽药物的设计中。苯丙氨酸的刚性生物电子等排物 1,2,3,4-四氢喹啉-2-羧酸存在于多种生物活性化合物中。然而,只有少数成功的方法被报道用于其不对称合成。为了开发一种环境友好且无金属的有机催化工艺来制备该化合物,合成了许多新型P-手性N-磷酰基磺酰胺布朗斯台德酸,并在喹啉-2-羧酸盐的仿生转移氢化反应中进行了评估,得到( R )-1,2,3,4-四氢喹啉-2-羧酸盐。
Enantioselective Synthesis of 2-Functionalized Tetrahydroquinolines through Biomimetic Reduction
Biomimetic asymmetric reduction of 2-functionalized quinolines has been successfully developed with the chiral and regenerable NAD(P)H model CYNAM in the presence of transfer catalyst simple achiral phosphoric acids, providing the chiral 2-functionalized tetrahydroquinolines with up to 99% ee. Using this methodology as a key step, a chiral and potent opioid analgesic containing a 1,2,3,4-tetrahydroquinoline