Abstract: The invention disclosed a compound of general formula (I), a single stereoisomer thereof, a mixture of stereoisomers thereof, and a prodrug, pharmaceutically acceptable salt and metabolite thereof, X1, X2, X3, X4, R1, R2, x, y and z being as defined in the present invention.
Type:
Grant
Filed:
June 29, 2015
Date of Patent:
January 29, 2019
Assignees:
THE KEY LABORATORY OF CHEMISTRY FOR NATURAL PRODUC, VERSITECH LIMITED