期刊
ORGANIC LETTERS
卷 15, 期 4, 页码 871-873出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol400030a
关键词
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资金
- National Basic Research Program of China [973-2010CB833200, 973-2010CB833300]
- National Natural Science Foundation of China [20832007, 21102167]
- Science and Technology Commission of Shanghai Municipality [12DZ1930902]
- Chinese Academy of Sciences
A concise and efficient formal synthesis of (-)-hamigeran B is reported. The critical intermediate was synthesized from 3-methoxy-5-methylphenyl trifluoromethanesulfonate with an 11-steps 7.2% total yield route. The chiral quaternary carbon was efficiently and steroselectively constructed through an intermolecular Pauson-Khand reaction and a Claisen rearrangement reaction with >99% ee; the cyclohexane B was then closed through an aldehyde Friedel Crafts cyclization. Lastly, the isopropenyl group of ring C was introduced through a Suzuki coupling reaction.
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