Synthesis, stereochemistry and conformational properties of diastereomeric cyclic dipeptides containing tetrahydro-1,4-thiazine-3,5-dicarboxylic acid
作者:Mario Paglialunga Paradisi、Giampiero Pagani Zecchini、Ines Torrini、Gino Lucente
DOI:10.1002/jhet.5570270627
日期:1990.9
The synthesis of linear dipeptides containing N-protected L-phenylalanine and (3R-cis)-tetrahydro-1,4-thiazine-3,5-dicarboxylic acid dialkyl diester residues is described. N-Deprotection of these dipeptides by hydrogenolysis on palladium afforded directly a mixture of cis and trans dioxopiperazines. The stereochemistry and the solution conformational properties of the cyclic dipeptides are determined
描述了包含N-保护的L-苯丙氨酸和(3R-顺式)-四氢-1,4-噻嗪-3,5-二羧酸二烷基二酯残基的直链二肽的合成。通过在钯上的氢解作用使这些二肽N-脱保护,直接得到顺式和反式二氧杂哌嗪的混合物。确定了环状二肽的立体化学和溶液构象性质。