Therapeutic somatostatin analogs

US4853371A · kind A · utility

Assignee

• The Administrators of the Tulane Educational Fund · US

Inventors

• David H. Coy · New Orleans, US
• William A. Murphy · Slidell, US
• Mark L. Heiman · Indianapolis, US

Key dates

• Filing date: Jun 22, 1988
• Grant date: Aug 1, 1989
• Expiry date: Jun 22, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S930/16
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

An octapeptide of the formula: ##STR1## wherein each A.sub.1 and A.sub.2, independently, is H, C.sub.1-12 alkyl, C.sub.7-10 phenylalkyl, R.sub.1 CO (where R.sub.1 is C.sub.1-20 alkyl, C.sub.3-20 alkenyl, C.sub.3-20 alkinyl, phenyl, naphthyl, or C.sub.7-10 phenylalkyl, R.sub.2 OCO (where R.sub.2 is C.sub.1-10 alkyl or C.sub.7-10 phenylalkyl), provided that when one of A.sub.1 or A.sub.2 is R.sub.1 CO or R.sub.2 OCO, the other must be H; A.sub.3 is CH.sub.2 -A.sub.6 (where A.sub.6 is pentafluorophenyl, naphthyl, pyridyl, or phenyl); A.sub.4 is o- m- or p-substituted X-Phe (where X is a halogen, H, NO.sub.2, OH, NH.sub.2, or C.sub.1-3 alkyl), pentafluoro-Phe, or .alpha.-Nal; A.sub.5 is Thr, Ser, Phe, Val, .alpha.-aminobutyric acid, or Ile, provided that when A.sub.3 is phenyl, A.sub.1 is H, and A.sub.2 is H, A.sub.5 cannot be Val; and A.sub.7 is Thr, Trp, or .beta.-Nal; or a pharmaceutically acceptable salt thereof.