Simcere Pharmaceutical Co., Ltd.

Yanlin Ren

Jianwei Zhou

Aiping Li

Yefei Huang

Dongyin Chen

A compound as shown in formula I. Ris selected from the group consisting of &#x2014;OH, &#x2014;CH, &#x2014;CHCH, &#x2014;OCH, &#x2014;OCHCH; Ris selected from the group consisting of &#x2014;H, &#x2014;OH, &#x2014;CH, &#x2014;CHCH, &#x2014;CHCHCH, &#x2014;OCH, &#x2014;OCHCHCH; Ris selected from the group consisting of &#x2014;F, &#x2014;Cl, &#x2014;Br, &#x2014;I, &#x2014;CF; Ris selected from the group consisting of &#x2014;H, &#x2014;F, &#x2014;Cl, &#x2014;Br, &#x2014;I, &#x2014;CF; and Ris selected from the group consisting of &#x2014;H, &#x2014;CH, &#x2014;CHCH.

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Nanjing, China

Yanlin Ren