摘要:
Disclosed are combinations of polypeptides acting in a synergistic manner to promote release and elevation of growth hormone levels in the blood of animals. Also disclosed are methods of promoting the release and elevation of growth hormone levels in the blood of animals using the disclosed combination of polypeptides.
摘要:
Disclosed are novel polypeptide compounds which promote the release and elevation of growth hormone levels in the blood of animals. Also disclosed are methods of promoting the release and elevation of growth hormone levels in the blood of animals using the disclosed polypeptide compounds.
摘要:
Disclosed are novel polypeptide compounds which promote the release and elevation of growth hormone levels in the blood of animals. Also disclosed are methods of promoting the release and elevation of growth hormone levels in the blood of animals using the disclosed polypeptide compounds.
摘要:
Novel polypeptides which promote the release of growth hormone when administered to animals are described. These polypeptides have the formula:A.sub.1 --D.sup..beta. Nal--A.sub.3 --Trp--A.sub.5 --A.sub.6 --Zwherein A.sub.1, A.sub.3, A.sub.5, A.sub.6 and Z" are as defined in the specification.
摘要:
Disclosed is a process for preparation of an amino acid, such as phenylalanine, with a high degree of optical purity. The process makes use of the same amino acid as a chiral template.
摘要:
Disclosed is a process for preparation of an amino acid, such as phenylalanine, with a high degree of optical purity. The process makes use of the same amino acid as a chiral template.
摘要:
Novel compositions that are useful as nutrients are disclosed. These compounds are preferably water soluble parenteral nutrients and are glycerol esters of .beta.-acyloxybutyrates of the formula ##STR1## wherein each R is the same or different and is hydrogen, or --COCH.sub.2 CHOR'CH.sub.3), provided that at least one R is not hydrogen and wherein R' is a linear acid ester of even carbon number from 2 to 20 carbons. These compositions are useful as a substitute for glucose in feeding.
摘要:
Disclosed is a process for synthesis of a dipeptide such as N-acetyl-L-.alpha.-aspartyl-L-phenylalanine methyl ester wherein one amino acid serves as a chiral template which allows for synthesis of a second amino acid residue to form said dipeptide. The process involves several novel steps such as a nucleophile addition step. In addition, several novel intermediates are described.
摘要:
Disclosed is a novel process for the production of poly(3-hydroxyalkanoates) through the condensation polymerization of esters of 3-hydroxyalkanoic acids at a temperature of about 90.degree. to 200.degree. C. in the presence of a titanium catalyst. Also is disclosed a novel composition that is a poly(3-hydroxyalkanoate) containing predominantly carboxylic ester end groups.
摘要:
Novel poly(3-hydroxyalkanoates), such as poly(3-hydroxybutyrate), and blends of these with other polymers are disclosed. A novel process for producing these poly(3-hydroxyalkanoates) is also disclosed which entails polymerizing one or more .beta.-substituted-.beta.-propiolactone(s) under polymerization conditions in the substantial absence of water in the presence of an anionic initiator.