(1R,2R)-1-((E)-Styryl)-2-methylcyclopropane 在 250 o C 外消旋并异构化为 6-苯基六-1,4-(Z)-二烯和 3-苯基-的四种异构体4-甲基环戊烯。从外消旋化和结构异构化的测量速率常数,以及四种 3-苯基-4-甲基环戊烯的相对量随时间变化的信息,四种立体化学不同路径对这种乙烯基环丙烷重排的相对贡献是发现为 60% si、10% ar、19% sr 和 11% ai
The present invention relates generally to amide containing heterobicyclic containing pharmaceutical agents, and in particular, to amide containing heterobicyclic metalloprotease inhibiting compounds. More particularly, the present invention provides a new class of heterobicyclic MMP-3 and/or MMP-13 inhibiting compounds that exhibit an increased potency and selectivity in relation to currently known MMP-13 and MMP-3 inhibitors.
Disclosed are isolated, unnatural polypeptides containing cyclically-constrained β-amino acid residues and cyclically-constrained γ-amino acid residues. The compounds are unnatural and because they contain rotationally constrained residues that are not amenable to enzymatic degradation, the compounds are useful to probe protein-protein and other large molecule interactions.