中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 5-Hydroxy-4-methoxy-1-(1,1-dimethylethoxy)-pyrrol-2(5H)-on | 177087-31-9 | C9H15NO4 | 201.222 |
A series of potentially cytotoxic α,β-unsaturated γ -hydroxy-butyrolactones, -lactams and -thiolactones has been synthesized via regioselective hydride reduction of the appropriate maleic acid anhydrides, imides and thioanhydrides. By this means a straightforward access to naturally occurring antibiotic narthigenine 2, its hitherto unknown thio-analogue 5b and higher substituted derivatives and analogues of 2 is presented.