Leduc made his debut in 1967 television series
Les oiseaux rares (The rare birds). He played the lead role of Simon in his feature film debut, Robert Benayoun's 1968 ''Paris n'existe pas'' (with
Serge Gainsbourg). Shortly thereafter he starred in
Alain Robbe-Grillet's
Eden and After. In 1970 he played Félix de Vandenesse alongside
Delphine Seyrig in Marcel Cravenne's film
The lily of the valley, Maxence with
Claude Jade in the TV saga
Mauregard by
Claude de Givray and the leading role of Saint-Brice in
We are no longer in the forest. Robbe-Grillet also cast him for
N. a pris les dés ..., Benayoun hired him a second time in 1975 for
Serious as Pleasure (
Sérieux comme le plaisir) as Bruno, co-star of
Jane Birkin. In 1974, he played with
Niels Arestrup a gay couple in ''Miss O'Gynie et les hommes fleurs'', in which the two men resist the temptations of a young woman. Leduc continued acting in films and television shows in the 1980s (including
Mieux courir vaut with
Christian Clavier) and 1990s (including
Ce que savait Maisie by
Edouard Molinaro), but devoted more time to theatre work. Leduc died on 11 November 2022, aged 81. ==Selected filmography==