摘要:
The present application discloses a compound of formula (I) or a salt thereof: (I) and compositions comprising such compound or salt thereof. The use of such compound, salt thereof or composition comprising same for treating anemia or leukopenia, fibrosis, cancer, hypertension and/or a metabolic condition in a subject is also disclosed.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Carbonylierung von Allylalkoholen bei niedriger Temperatur, niedrigem Druck und/oder niedriger Katalysatorbeladung. In einer alternativen Ausführungsform wird zur Carbonylierung ein Acylierungsprodukt des Allylalkohols eingesetzt. Die vorliegende Erfindung betrifft ebenfalls die Herstellung von Folgeprodukten dieser Carbonylierungsprodukte und speziell von (-)-Ambrox.
摘要:
Poly(3-cyclopropyl-3-hydroxypropionates) (I) which are useful for the preparation of vinylcyclopropane and cyclopropylacetylene are disclosed. Methods for the preparation of a variety of intermediates obtained from (I) such as 3-cyclopropyl-3-hydroxypropionic acid and esters and salts thereof, 3-cyclopropylacrylic acid, and vinylcyclopropane also are disclosed.
摘要:
This application relates to a process for the production of (2R)-dihydroartemisinic acid or (2R)-dihydroartemisinic acid esters from artemisinic acid or artemisinic acid esters, respectively, by diimine hydrogenation of the exocyclic CC-double bond, and use of said process in the production of the antimalarial drug artemisinin.
摘要:
A carboxylic acid compound having cyclopropane ring(s) of the formula (I): wherein R is alkyl or alkenyl optionally having one or more 1,2-cyclopropylene in a carbon chain and/or optionally having cyclopropyl at the end of a chain,X is a single bond or alkylene, wherein the total number of carbon less the number of cyclopropane ring is 10-25, and a pharmaceutically acceptable salt thereof are provided. The compound (I) shows an LTP-like potentiation of synaptic transmission, allows slow metabolism in the living body, shows a stable LTP-like potentiation of synaptic transmission, and is useful as an agent for LTP-like potentiation of synaptic transmission, a cognition-enhancing drug or an agent for the prophylaxis and treatment of dementia, a learning and memory disorder and a neurotransmitter release disorder.
摘要:
Methods of applying cyclopropene derivatives and compositions thereof to block ethylene receptors in plants are disclosed. One such method comprises applying to the plant an effective ethylene response-inhibiting amount of cyclopropene derivatives or compositions thereof. Also disclosed are methods of inhibiting abscission in plants, methods of inhibiting the ripening of picked fruits, methods of inhibiting the ripening of picked vegetables, and methods of prolonging the life of cut flowers.
摘要:
The invention is directed to the cross-metathesis and ring-closing metathesis reactions between geminal disubstituted olefins and terminal olefins, wherein the reaction employs a Ruthenium or Osmium metal carbene complex. Specifically, the invention relates to the synthesis of alpha -functionalized or unfunctionalized olefins via intermolecular cross-metathesis and intramolecular ring-closing metathesis using a ruthenium alkylidene complex. The catalysts preferably used in the invention are of general formula (I) or (II), wherein: M is ruthenium or osmium; X and X are each independently an anionic ligand; L is a neutral electron donor ligand; and, R, R , R , R , R , and R are each independently hydrogen or a substituent selected from the group consisting of C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, aryl, C1-C20 carboxylate, C1-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl and C1-C20 alkylsulfinyl.
摘要:
The present invention provides an antioxidant carotenoid composition substantially free of lutein comprising lutein esters. This antioxidant composition may readily be formulated into products for administration to humans to provide protection from the harmful effects of free radicals. The invention also provides a method of preventing or inhibiting the harmful effects of free radicals by administering an effective amount of an antioxidant carotenoid composition substantially free of lutein comprising lutein esters.
摘要:
Provided are fungal cells, e.g., yeast cells, that express heterologous enzymes on the biosynthesis pathway for valerenic acid and produce high levels of valerena-4,7(11)-diene and/or valerenic acid.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Carbonylierung von Allylalkoholen bei niedriger Temperatur, niedrigem Druck und/oder niedriger Katalysatorbeladung. In einer alternativen Ausführungsform wird zur Carbonylierung ein Acylierungsprodukt des Allylalkohols eingesetzt. Die vorliegende Erfindung betrifft ebenfalls die Herstellung von Folgeprodukten dieser Carbonylierungsprodukte und speziell von (-)-Ambrox.