Cyclo(L Phe L Pro)were synthesized from L Pheylalanine and L Proline via DCC condesation, Pd/C catalytic hydrogenation and refluxing in methanol. Its structure was elucidated by HREI MS and DEPT NMR.

• 从L?苯丙氨酸和L?脯氨酸出发，分别保护两种氨基酸的N 端和C端，将N 端保护的L?苯丙氨酸与C端保护的L?脯氨酸经DCC缩合，得直链二肽，再经Pd/C催化氢化，甲醇中回流，得环（L?苯丙?L?脯），结构经HREI?MS、DEPT NMR等波谱证实