Highly Effective Reduction of 2″,3″-Dibromocephalomannine Under Ultrasound Irradiation

Chem. J. Chinese Universities ›› 2004, Vol. 25 ›› Issue (10): 1860.

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Highly Effective Reduction of 2″,3″-Dibromocephalomannine Under Ultrasound Irradiation

JIN Xiao-Ying¹, LI Ming¹, CHEN Jian-Min¹, CHEN Jia-Kuan², DU Ying-Xiang³

1. Department of Environmental Science & Engineering, Fudan University, Shanghai 200433, China;
2. Key Laboratory for Biodiversity Science and Ecological Engineering of Ministry of Education, Institute of Biodiversity Science, School of Life Sciences, Fudan University, Shanghai 200433, China;
3. Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, China

Received:2003-11-24 Online:2004-10-24 Published:2004-10-24

Abstract

Abstract: Dibromocephalomannine(DIBROCs)is the intermediate product in the purification of taxol. In this paper, we successfully realized the efficient conversion of DIBROCs to cephalomannine under ultrasound irradiation for the first time. Ultrasound irradiation, a favorable acceleration of reaction rates, could solve the problems of incomplete conversion of DIBROCs to cephalomannine and the by-products due to long reaction time under the traditional stirring condition. The results showed that under ultrasound irradiation zinc powder was more effective than other metal powder and the proper reaction temperature was 20 ℃. Under this condition the conversion was more than 98% in 40 min.

Key words: Dibromocephalomannine, Cephalomannine, Ultrasound wave, Metal powder, Reduction

CLC Number:

O621

TrendMD:

JIN Xiao-Ying, LI Ming, CHEN Jian-Min, CHEN Jia-Kuan, DU Ying-Xiang . Highly Effective Reduction of 2″,3″-Dibromocephalomannine Under Ultrasound Irradiation[J]. Chem. J. Chinese Universities, 2004, 25(10): 1860.

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Highly Effective Reduction of 2″,3″-Dibromocephalomannine Under Ultrasound Irradiation

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