NATION

Luis G. Nogales, the executive who led an ouster of the majority owners at United Press International and then guided the news agency through a Chapter 11 bankruptcy reorganization, resigned Tuesday as chairman and chief executive. He will be replaced by Mario Vazquez Rana, the Mexican newspaper magnate who bought UPI, now called New UPI Inc., on June 11.

Nogales, 42, had indicated that he would leave UPI when Vazquez Rana took over. He did not announce any immediate plans for a new job. Nogales, a former executive vice president of Golden West Broadcasters, became president of UPI in September, 1984, and quickly won wage concessions of 25% from employees in an attempt to keep the struggling news agency alive. In March, 1985, Nogales and creditors wrested control of UPI from its majority owners and steered the company into Chapter 11. That reorganization ended June 10, the day before Vazquez Rana took control.