| 中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
|---|---|---|---|---|
| —— | methyl (3S,5R,6R)-6-phthalimidopenicillanate | 19788-65-9 | C17H16N2O5S | 360.39 |
The benzoyloxylation of penicillin derivatives at C5, on treatment with t-butyl perbenzoate in the presence of a copper catalyst, is facilitated by a phthalimido group at C6 when the substituents on the lactam ring are in the cis orientation, but hindered when the groups are trans substituted. In the absence of a C6 substituent, a competing reaction occurs in which the thiazolidine ring is cleaved.