The invention related to a novel process, novel process steps and novel intermediates useful in the synthesis of pharmaceutically active compounds, especially renin inhibitors, such as Aliskiren Inter alia the invention relates to a process for the manufacture of a compound of the formula I.
or a salt thereof, wherein R1 as well as Act are as defined in the specification, and processes of manufacturing this compound as well as intermediates in this process.
A Homo-Proline Tetrazole as an Improved Organocatalyst for the Asymmetric Michael Addition of Carbonyl Compounds to Nitro-Olefins
作者:Steven V. Ley、Claire E. Mitchell、Alexander J. Cobb
DOI:10.1055/s-2005-862392
日期:——
A new homo-proline tetrazole derivative 7 has been prepared and shown to have improved properties for achieving asymmetric Michaeladdition of carbonyl compounds to nitro-olefins.
8,9,10,10a-Tetrahydro-6<i>H</i>-tetrazolo[1,5-<i>a</i>]pyrrolo[2,1-<i>c</i>]pyrazines: New Heterocyclic Frameworks Generated by an Ugi-Type Multicomponent Reaction
A one-pot, Ugi-type three-component coupling process between an aldehyde, an isocyanide and proline tetrazole is reported, leading to new heterocyclic structures in good to excellent yields.
据报道,醛、异氰化物和脯氨酸四唑之间的一锅式 Ugi 型三组分偶联过程,以良好至优异的产率产生新的杂环结构。