Also

* Mazda Motor Corp., a subsidiary of Ford Motor Co., said James O’Sullivan was named president and chief executive of the Japanese company’s North American unit. O’Sullivan, 50, replaces Charles Hughes, who resigned Feb. 27. O’Sullivan most recently was franchise and business development manager of Ford’s Lincoln Mercury division.

* Toyota Motor Corp. set starting prices of less than $15,000 for the first models of the new Scion brand to attract young buyers.

* Crown Realty & Development of Irvine completed its $111-million acquisition of Burbank Media City Center, sold by Pan Pacific Retail Properties Inc. of San Diego.

* Allergan Inc. said an oral gel-capsule form of its retinoid compound tazarotene, a derivative of vitamin A, was shown in two pivotal-stage trials to be an effective treatment for moderate-to-severe psoriasis.

* Gateway Inc., the money-losing San Diego computer maker, plans to sell two portable projectors as the company focuses on offering more profitable products.