dl-β-Bulnesene (1) and dl-1-epi-α-bulnesene (15) have been synthesized starting from the bromide 4 (Schemes 2 and 3). In the key step 910 the bonds of the final product were formed by an intramolecular photoaddition. The synthesis was completed by the fragmentation 1214 and the Wittig reaction 1415+1.
从
溴化物4开始,合成了dl -β-
丁烯(1)和dl -1-epi-α-bulnesene (15)(方案2和3)。在关键步骤910中,通过分子内光加成形成最终产物的键。通过断裂1214和维蒂希反应1415 + 1完成了合成。