An Expeditious Synthesis of Dimethyl 1-Benzyl-cis-Piperidine-3,5-Dicarboxylate
摘要:
A mixture of dimethyl 1-benzyl-cis- and trans-piperidine-3,5-dicarboxylate is prepared in high yields from readily available starting materials, by a reliable procedure. The straightforward conversion of the mixture into the diastereomerically pure cis-isomer, a useful sigma-symmetry intermediate for alkaloid synthesis, is also described.
The disclosure generally relates to the novel compounds of formula I, including their salts, which inhibit HIV integrase and prevent viral integration into human DNA. This action makes the compounds useful for treating HIV infection and AIDS. The invention also encompasses pharmaceutical compositions and methods for treating those infected with HIV.
Desymmetrization of dimethyl meso-piperidine-3,5-dicarboxylates 3a-c with pig liver esterase (PLE), lipase from Candida cylindracea (CCL) and porcine pancreatic lipase (PPL) is described. The enantioselectivities of the enzymatic transformations and the absolute configurations of the resulting half-esters 2a-c were determined.
US8129398B2
申请人:——
公开号:US8129398B2
公开(公告)日:2012-03-06
An Expeditious Synthesis of Dimethyl 1-Benzyl-<i>cis</i>-Piperidine-3,5-Dicarboxylate
A mixture of dimethyl 1-benzyl-cis- and trans-piperidine-3,5-dicarboxylate is prepared in high yields from readily available starting materials, by a reliable procedure. The straightforward conversion of the mixture into the diastereomerically pure cis-isomer, a useful sigma-symmetry intermediate for alkaloid synthesis, is also described.
Highly Enantiopure <i>C</i><sub>1</sub>-Symmetric <i>cis</i>-Piperidine-3,5-dimethanol Monoacetates by Enzymatic Asymmetrization<sup>1</sup>