- Cyclic sulphate preparation method
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The invention relates to the field of organic synthesis and especially relates to a cyclic sulphate preparation method. The sulphate preparation method disclosed by the invention comprises the step ofreacting a compound shown in formula II with sulfuryl chloride under the reaction solvent existence condition to prepare and obtain a compound shown in formula I. The sulphate preparation method disclosed by the invention has the characteristics of brief steps, small side reaction, simpleness in aftertreatment, small three wastes, low manufacturing cost, suitability for industrial large-scale production and the like.
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Paragraph 0079; 0080; 0081; 0082
(2018/09/11)
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- TOTAL SYNTHESIS OF (+/-) ASPIDOFRACTININE
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The pentacyclic skeleton 10 of the aspidospermine group of indole alkaloids has been constructed from hexahydrocarbazol-4-one 2 with high stereoselectivity.The synthesis of (+/-) 19-oxo aspidofractinine 12, a direct precursor of aspidofractinine 4, illustrates the usefulness of this new general strategy.
- Dufour, Monique,Gramain, Jean-Claude,Husson, Henri-Philippe,Sinibaldi, Marie-Eve,Troin, Yves
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p. 3429 - 3432
(2007/10/02)
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