Patent ID: 9334255
Filing Date: 2016-05-10
CPC Classification: A61P,C07C,C07D,C07F,Y02P

Claim Text:
1. A process for preparing a stereoselectively produced isomeric compound of the following formula: wherein in R 2a and R 6 independently represent hydroxy protecting groups and R 7 represents C 1-6 alkoxy or C 1-12 alkyl-COOR 9 , where R 9 represents C 1-3 alkyl comprising the steps of: (1) performing a cycloaddition reaction on a compound of the following formula: wherein in R 2a and R 6 independently represent hydroxy protecting groups to form a cyclodiene compound of the following formula: wherein R 2a , R 6 and R 7 are each defined above; (2) aromatizing of the cyclodiene compound of formula (IV) to form an aromatic product of the following formula: wherein R