Cathepsin D, a lysosomal aspartyl protease, has been implicated in the path
ology of Alzheimer's disease as well as breast and ovarian cancer. A weakly
active cathepsin D inhibitor was identified by high throughput screening.
Subsequent optimization led to the discovery of a new class of small molecu
le inhibitors of this enzyme, culminating with the sulfonamide 13 (IC50 = 2
50 nM), (C) 1999 Elsevier Science Ltd. All rights reserved.