Reaction of serine derived 1-alkoxy-2-azadienes with dehydroalanine derived dienophiles results in Diels-Alder reaction and aromatisation to give 2,3,6-trisubstituted pyridines, thereby establishing the viability of the proposed biosynthetic route to the pyridine ring of the thiopeptide antibiotics originally proposed by Bycroft and Gowland.
丝氨酸衍生的1-烷氧基-2-氮杂二烯与脱氢丙
氨酸衍生的亲二烯体的反应导致狄尔斯-阿尔德反应和芳构化,得到2,3,6-三取代的
吡啶,从而确立了拟议的
生物合成路线到
硫肽
吡啶环的可行性。最初由Bycroft和Gowland提出的抗生素。