Canadian retail chain Alimentation Couche-Tard is dropping its proposal to acquire Seven & i Holdings Co_, the Japanese operator of the 7-Eleven convenience store chain, citing frustration in ongoing negotiations that showed what it called “a lack of constructive engagement.

In a statement, Seven & i said was it was disappointed by Couche-Tard's decision to walk away, but said it disagreed with the numerous mischaracterisations in Canadian suitor's letter