Soviet President Mikhail S. Gorbachev is in danger of being ousted from power, human rights activist Andrei D. Sakharov and his wife were quoted as saying Thursday in a newspaper interview. "The conservatives will overthrow Gorbachev or at least impose their views on him," the conservative French daily Le Figaro quoted Sakharov as saying. The Soviet physicist's wife, Yelena Bonner, was quoted as adding of the Soviet leader, "I think he will be overthrown soon" because he refuses to seek the support of the people through direct elections. "The only real defense for a chief of state is direct election. Why is Gorbachev afraid? We would elect him. Our country has no other leader."