中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2-环戊基乙酸 | cyclopentylidene acetic acid | 1903-27-1 | C7H10O2 | 126.155 |
A series of 4-alkyl-4-aminobut-2-enoic acids (2)-(5) has been prepared as conformationally restricted analogues of GABA. The synthetic route which involved allylic bromination followed by displacement with ammonia also gave vinyl glycine analogues (7)-(9) as readily purified by-products of the reaction. The low biological activity in vitro against GABA uptake, binding and enzyme systems of (E)-2-aminocyclohexylideneacetic acid (4) and (E)-2-aminocyclopentylideneacetic acid (5) has been interpreted in terms of steric hindrance by the ring-forming methylene groups at the particularactive sites concerned.