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LT - METHOD FOR PREPARING OPTICALLY PURE (R)-4-N-PROPYL-DIHYDROFURAN-2(3H)-ONE

EN - METHOD FOR PREPARING OPTICALLY PURE (R)-4-N-PROPYL-DIHYDROFURAN-2(3H)-ONE

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Patent not validated

Bibliographic data

Indications of the International Patent Classification (IPC)
(51)	INT.CL.	C07D 307/33
		C07D 263/26
		C07D 263/24
		C07D 263/22
		C07C 253/30
		C07C 255/12

European patent
(11)	Number of the document	3543229
(13)	Kind of document	T
(96)	European patent application number	17897655.1
	Date of filing the European patent application	2017-04-23
(97)	Date of publication of the European application	2019-09-25
(45)	Date of publication and mention of the grant of the patent	2021-04-14
(46)	Date of publication of the claims translation

PCT application
(86)	Number	PCT/CN2017/081556
	Date	2017-04-23

PCT application publication
(87)	Number	WO 2018/152949
	Date	2018-08-30

Priority applications
(30)	Number	Date	Country code
	201710102792	2017-02-24	CN

Inventors
(72)	MA, Liang, CN

Grantee
(73)	Beijing AblePharmtech Co., Ltd., Rm.1-502, Bld. 7 No. 99 Kechuang 14th Street Beijing Economic-Technological Development Area Yizhuang, Beijing 101111, CN

Title
(54)	METHOD FOR PREPARING OPTICALLY PURE (R)-4-N-PROPYL-DIHYDROFURAN-2(3H)-ONE
	METHOD FOR PREPARING OPTICALLY PURE (R)-4-N-PROPYL-DIHYDROFURAN-2(3H)-ONE