SYNTHESIS OF trans-FUSED PERHYDROFUROPYRANS AND RELATED α-METHYLENE LACTONES: BICYCLIC RING-SYSTEMS PRESENT IN THE EZOMYCINS, THE OCTOSYL ACIDS, AND CERTAIN ANTITUMOR TERPENOIDS

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• Jiangsu Feymer Technology Co., Ltd.

  Contact:+86-512-58110132

  Address:Fenghuang Town, Zhangjiagang City, Jiangsu Province, China

• Zouping Sanhao Chemical Co., Ltd .

  website:http://www.sanhao-chem.com

  Contact:+86-15266745066

  Address:3rd Floor, Chamber of Commerce Building, Zouping City

• Changsha Yonta Industry Co., Ltd.

  Contact:+ 86-731-8535 2228

  Address:Rm.1717, North Bldg., No.368, East 2nd Ring Road(2nd Section)

• NIGNXIA XINDACHANG TECHNOLOGY CO.,LTD

  website:https://xdcchemical.com/

  Contact:86-311-85758226

  Address:North Industry Area, Wuji

• Merit Special New Material Co., Ltd.

  website:http://www.ycmerit.com

  Contact:13585104388

  Address:No.15 Xiexin Road,Funing Economic Development Zone,JiangSu,P.R.China