Abstract
OBJECTIVE: To improve the synthesis and promote the yield for centchroman. METHODS: The reported synthetic route was simplified and redesigned, especially using 2, 2-dimethyl-3-phenyl-7-methoxychromene (2) to react with phenol. RESULTS: The transisomer was got in the step of highly stereo-selective Friedel-Crafts alkylation and final product centchroman was got just by five steps with over all yield of 40%. CONCLUSION: The synthesis for centchroman was simplified and yield was increased with out two steps of hydrogenation in high pressure and configuration transformation which appeared in the reported route.
Key words
centchroman /
technical improvement
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Ji Xioshen .
The improvement for synthesis of centchroman [J]. Chinese Pharmaceutical Journal, 1998, 33(02): 109-110
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References
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