Azacyclo- and azabicycloalkanone peptidomimetics were synthesized regio- and diastereoselectively by iodoacetoxylation and transannular amidation reactions on unsaturated lactam precursors contingent on ring size, olefin position, solvent, and hypervalent iodine(III) reagent. 4-Iodopyrrolizidinone 1, 7-iodoindolizidinone 2, and 4-iodo-5-acetoxylactams (e.g., 6 and 7) were made stereospecifically from
通过
碘乙酰氧基化和在不饱和内酰胺前体上进行环戊酰胺化反应,根据环的大小,烯烃位置,溶剂和高价
碘(III)试剂,区域和非对映选择性地合成氮杂环和
氮杂双环烷酮的拟肽。4- Iodopyrrolizidinone 1,7- iodoindolizidinone 2,和4-
碘-5- acetoxylactams(例如,6和7)的立体有择性从7-9元烯烃制成16,
碘和高价
碘(III)在
乙腈或
甲苯中,分别。X射线晶体学显示出模仿天然肽转向侧链和主链构象的潜力。