Abstract:
It is an object of the present invention to provide a method for producing a hydrophobic licorice extract which is useful for applications, such as food, food additives, functional nutritive food, food for specified health uses, dietary supplements, drink, feedstuff, drugs, and quasi-drugs, and which has satisfactory powder characteristics. This invention relates to a method for producing a hydrophobic licorice extract comprises performing extraction from licorice with a water-soluble organic solvent, the area of the bark of the licorice occupying at least 30% of the total surface area of the licorice. This invention also relates to a method for producing a hydrophobic licorice extract comprises crystallizing an extract extracted from licorice, or an extraction residue of the licorice, with a water-soluble organic solvent in a mixed solvent comprising water and the water-soluble organic solvent, the weight ratio, water/(water-soluble organic solvent + water), being 1/3 or more.
Abstract:
The present invention relates to 3β,28-diacetoxy-18-oxo-19,20,21,29,30-pentanorlupan-22-oic acid methanol solvate, its use in medicine and processes for its preparation.
Abstract:
The present invention provides a method for preparing betulin-3-acetate including alcoholyzing betulin 3,28-dibenzoate; a process for preparing betulin-3-acetate including: (1) acylating betulin to provide betulin 3,28-dibenzoate and (2) alcoholyzing betulin 3,28-dibenzoate to provide betulin-3-acetate; and a process for preparing betulinic acid including: (1) acylating betulin to provide betulin 3,28-dibenzoate; (2) alcoholyzing betulin 3,28-dibenzoate to provide betulin-3-acetate; (3) oxidizing betulin-3-acetate to provide betulinic aldehyde-3-acetate; (4) oxidizing betulinic aldehyde-3-acetate to provide betulinic acid-3-acetate; and (5) deprotecting betulinic acid-3-acetate to provide betulinic acid.
Abstract:
The new triterpenoids of general formulae (I), (II), (III) and (IV) where R represents a dialkyl, trialkyl, triphenyl, diphenylalkyl, alkyldiphenyl, dialkylphenyl, haloalkyl, halophenylalkyl, allylalkyl or alkylaminoalkyl group and R represents a carboxyl group, salt or ester, and a process for their preparation which comprises reaction of friedelin with a silylating agent in the presence of a bulky strong base, with kinetic or thermodynamic control, to produce regio-specifically compounds of general formula (I) or (II). Oxidation of (I) or (II) yields the corresponding hydroxy ketones (VII) or (VIII), from which acyl and glycosyl derivatives can be prepared, and further oxidation of the hydroxy ketones (VII) or (VIII) with peracid gives the seco-aldehyde acids (III) or (IV), from which esters or salts can be prepared. Ozonolysis of (I) or (II), followed by reductive treatment, produces the diols of formula (IX) or (X), from which acyl and glycosyl derivatives can be prepared. Oxidation of (I) with a benzoquinone leads to friedel-1-en-2-one (XI) in high yields. Compounds or combinations of compounds (I), (II), (III), (IV), (VI), (VII), (VIII), (IX), (X), (XII), including the acyl and glycosyl derivatives thereof, find application in fungicidal, bactericidal, antitumour and antifeedant compositions.
Abstract:
A pharmaceutical composition for treating a hepatic disorder, comprising a triterpene derivative represented by the formula (I) or a pharmaceutically acceptable salt thereof is disclosed: wherein R represents a hydroxyl group, alkoxy, alkylcarbonyloxy, or aralkyloxy; R represents alkyl, - CH2OR , wherein R represents a hydrogen atom, alkyl, aralkyl, or alkylcarbonyl, formyl, -COOR , wherein R represents a hydrogen atom or alkyl, or -CH2N(R )R ; or R and R combine with each other to form -O-CR )-OCH2-, wherein R and R , which may be the same or different, represent a hydrogen atom, alkyl, or aryl; R and R , which may be the same or different, represent a hydrogen atom, a hydroxyl group, alkyl, hydroxyalkyl, formyl, -COOR , wherein R represents a hydrogen atom or alkyl, or -OR , wherein R represents alkyl, aralkyl, C1-6 alkylcarbonyl, arylcarbonyl, alkenyl, alkenylcarbonyl, or arylalkenylcarbonyl which may be optionally substituted; or R and R combine with each other to form a methylene group; and @ represents a single or double bond, provided that, when @ represents a double bond, R is absent.
Abstract:
A sulphamate compound suitable for use as an inhibitor of oestrone sulphatase (E.C.3.1.6.2) is described. The compound is a polycyclic compound comprising at least two ring components, wherein the polycyclic compound comprises at least one sulphamate group attached to at least one of the ring components, and wherein at least one of the ring components of the polycyclic structure is a heterocyclic ring.
Abstract:
Die Erfindung beinhaltet 9α-Hydroxy-8α-estra-1,3,5(10)-triene als neue Steroidzwischenprodukte, die geeignet sind zur Synthese von Steroidverbindungen aus Estra-1,3,5(10),9(11)-tetraenen. Es wird weiterhin ein Verfahren zur Herstellung der erfindungsgemäßen 9α-Hydroxy-8α-estra-1,3,5(10)-triene beschrieben, wobei Estra-1,3,5(10),8-tetraene hydroboriert und die gebildeten Organoborane anschließend oxydiert werden. Die erfindungsgemäßen Steroidzwischenprodukte realisieren die Verkürzung der Totalsynthese therapeutisch relevanter 11-substituierter Steroidverbindungen, ausgehend von Estra-1,3,5(10),8-tetraen-Derivaten.
Abstract:
A preparation of saponins of Quillaja saponaria, comprises fractions of Quil A having good adjuvant activity, low haemolytic activity and good ability to form immunostimulatory complexes (iscoms).