Total Synthesis of the Cyclic Heptapeptide Argyrin B: A New Potent Inhibitor of T-Cell Independent Antibody Formation
摘要:
[GRAPHICS]The total synthesis of Argyrin B (1) is presented using a synthetic plan that is convergent and flexible and conserves the stereogenic centers. The unusual amino acid 4-methoxy tryptophan (6) was obtained via an enzymatic resolution. Cyclization followed by oxidative elimination of the phenylseleno cysteine to the sensitive dehydroalanine afforded synthetic 1.
Total Synthesis of the Cyclic Heptapeptide Argyrin B: A New Potent Inhibitor of T-Cell Independent Antibody Formation
摘要:
[GRAPHICS]The total synthesis of Argyrin B (1) is presented using a synthetic plan that is convergent and flexible and conserves the stereogenic centers. The unusual amino acid 4-methoxy tryptophan (6) was obtained via an enzymatic resolution. Cyclization followed by oxidative elimination of the phenylseleno cysteine to the sensitive dehydroalanine afforded synthetic 1.