Abstract: A process for synthesizing a compound of formula I: is disclosed wherein R represents halo or C.sub.1-6 alkyl, unsubstituted or substituted with OP, wherein P represents a protecting group.
Type:
Grant
Filed:
May 13, 1998
Date of Patent:
June 1, 1999
Assignee:
Merck & Co., Inc.
Inventors:
Guy R. Humphrey, Ross A. Miller, David R. Lieberman
Abstract: A method of chronically instrumenting an animal enabling one to simulate congestive heart failure. A method for assessing the effects of a test compound on cardiac function and systemic vascular dynamics.
Abstract: The present invention is directed to compounds which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
Type:
Grant
Filed:
April 1, 1997
Date of Patent:
April 6, 1999
Assignee:
Merck & Co., Inc.
Inventors:
Neville J. Anthony, Robert P. Gomez, John S. Wai, Mark W. Embrey, Thorsten E. Fisher
Abstract: At low temperature, the protease of human cytomegalovirus (HCMV) is rendered highly active as a dimer of identical units. The protease is useful as a screening tool for HCMV antivirals as well as a diagnostic tool for diseases resulting from HCMV infection.
Abstract: The present invention is directed to compounds which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
Abstract: An access port for a reaction or other fluid vessel which maintains the vessel under an inert gas atmosphere and maintains the integrity of the inert gas seal while performing filtered filling or draining operations is presented. The port uses a deflected septum sealing technique. The invention can be used for a number of laboratory and clinical operations on a variety of size and shape vessels. The combination of the appropriate vessel with this access port is very well suited for use in lab automation systems, such as automated solid phase chemical synthesis, biological screening, combinatorial chemistry and other areas where reaction chemistry is conducted.
Type:
Grant
Filed:
June 18, 1997
Date of Patent:
March 16, 1999
Assignee:
Merck & Co., Ltd.
Inventors:
Gary S. Kath, Lihu Yang, Gregory W. King
Abstract: The present invention is directed to compounds which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
Abstract: The present invention is directed to compounds of the formula A which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras: ##STR1## The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
Abstract: There is disclosed a procedure for DNA-mediated transformation of Saccharomyces cerevisiae by electroporation utilizing lithium acetate and dithiothreitol to weaken cell wall structure resulting in increased transformation efficiency.
Abstract: A process for the synthesis of an N-(di-substituted phosphoryl)-trans-4-hydroxy-L-proline of the formula I: ##STR1## is disclosed, wherein R.sup.1 and R.sup.2 independently represent C.sub.1-18 alkyl, phenyl or phenyl-substituted C.sub.1-18 alkyl, or R.sup.1 and R.sup.2 are taken in combination to represent C.sub.2-4 alkylidene or phenyl. Trans-4-hydroxy-L-proline is reacted with a di-(substituted) phosphite of the formula III: ##STR2## in the presence of sodium hypochlorite and sodium hydroxide to produce a compound of formula I.
Abstract: The present invention is directed to compounds which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
Abstract: Novel amino acid conjugates of cyclohexa-peptidyl amines having the formula ##STR1## and having antifungal and antiparasital properties are described. The compounds exhibit less acute toxicity than the free amines.
Abstract: A process for synthesizing a compound of the formula I: ##STR1## or a pharmaceutically acceptable salt or ester thereof, wherein each P independently represents H or a protecting group, and R.sup.1 and R.sup.2 independently represent H, C.sub.1-10 alkyl, aryl or heteroaryl, or substituted C.sub.1-10 alkyl, aryl or heteroaryl, comprising:reacting the compounds: ##STR2## or a pharmaceutically acceptable salt or ester thereof, and ##STR3## or a pharmaceutically acceptable salt or ester thereof, wherein X represents OP(O)(OR).sub.2, or OSO.sub.2 R, wherein R represents C.sub.1-6 alkyl, aryl or perfluoro C.sub.1-6 alkyl, in the presence of an amine selected from the group consisting of: diisopropylamine (DIPA), dicyclohexylamine (DCHA), 2,2,6,6-tetramethylpiperidine (TMP), 1,1,3,3-tetramethylguanidine (TMG), 1,8-diazabicyclo?4.3.0!undec-7-ene (DBU) and 1,5-diazabicyclo?4.3.0!non-5-ene to produce a compound of formula I.
Abstract: The present invention comprises analogs of the CAAX motif of the protein Ras that is modified by farnesylation in vivo. These CAAX analogs inhibit farnesyl-protein transferase. Furthermore, these CAAX analogues differ from those previously described as inhibitors of farnesyl-protein transferase in that they do not have a thiol moiety. The lack of the thiol offers unique advantages in terms of improved pharmacokinetic behavior in animals, prevention of thiol-dependent chemical reactions, such as rapid autoxidation and disulfide formation with endogenous thiols, and reduced systemic toxicity. Further contained in this invention are chemotherapeutic compositions containing these farnesyl transferase inhibitors and methods for their production.
Abstract: The present invention is directed to compounds which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
Type:
Grant
Filed:
March 27, 1997
Date of Patent:
February 16, 1999
Assignee:
Merck & Co., Inc.
Inventors:
Neville J. Anthony, Robert P. Gomez, Samuel L. Graham
Abstract: The present invention is directed to compounds which inhibit farnesyl-protein transferase (FTase) and the farnesylation of the oncogene protein Ras. The invention is further directed to chemotherapeutic compositions containing the compounds of this invention and methods for inhibiting farnesyl-protein transferase and the farnesylation of the oncogene protein Ras.
Abstract: Oligopeptides which comprise amino acid sequences that are recognized and proteolytically cleaved by free prostate specific antigen (PSA) are described. Also described are assays which comprise such oligopeptides useful for determining free PSA protease activity in vitro and in vivo. Therapeutic agents which comprise conjugates of such oligopeptides and known cytotoxic agents are also described.
Type:
Grant
Filed:
October 6, 1995
Date of Patent:
February 2, 1999
Assignee:
Merck & Co., Inc.
Inventors:
Deborah DeFeo-Jones, Victor M. Garsky, Dong-Mei Feng, Raymond E. Jones, Allen I. Oliff