摘要:
The invention relates to novel compounds according to formula Ia and Ib; (Formula Ia and Ib) wherein A represents substituted or unsubstituted C 1-10 heteroaryl, C 6-14 aryl or C 6- 10 heterocycloalkylaryl; R 1 is C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 hydroxyalkyl, C 1-6 haloalkyl, C 1-6 amino, C 3-6 cycloalkyl, or C 1-6 heterocycloalkyl, each of which are optionally substituted; X represents -CR 3 R 4 -(CR 5 R 6 ) n -(CR 7 =CR 8 ) m -(C 6-14 aryl) r -(C 1-10 heteroaryl) s -(CR 9 R 10 ) p - (CR 11 = CR 12 ) q , R 2 represents C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 hydroxyalkyl, C 1-6 haloalkyl, C 1-6 amino, C 1-12 alkylsilyl, C 6-30 alkylarylsilyl, C 1-10 heteroaryl, C 6-14 aryl, C 1-10 heterocycloalkyl, C 1-10 heterocycloalkenyl, C 1-8 cycloalkyl, C 1-18 cycloalkenyl, each of which is optionally substituted, or R 2 represents hydrogen, carboxy, or hydroxy; or a pharmaceutically acceptable salt, solvate, or ester thereof; to processes for the preparation thereof, to said compounds for use in therapy, to pharmaceutical compositions comprising said compounds, wherein said compounds being useful, e.g. in the treatment of diseases associated with disturbances of CaSR activity, such as hyperparathyroidism.
摘要:
This invention relates to a new class of polyene polyketides, their pharmaceutically acceptable salts and derivatives, and to methods for obtaining the compounds. One method of obtaining these compounds is by cultivation of novel strains of Streptomyces aizunensis ; another method involves expression of biosynthetic pathway genes in transformed host cells. The present invention further relates to the novel strains of Streptomyces aizunensis used to produce these compounds, to the use of these compounds and their pharmaceutically acceptable salts and derivatives as pharmaceuticals, in particular to their use as inhibitors of fungal cell growth and cancer cell growth. The invention also relates to pharmaceutical compositions comprising these novel polyketides or a pharmaceutically acceptable salts or derivatives thereof. Finally, the invention relates to novel polynucleotide sequences and their encoded proteins, which are involved in the biosynthesis of these novel polyketides.
摘要:
The present invention relates to compounds which can be used as inhibitors of mitochondrial ceramidase, in particular human mitochondrial ceramidase. The invention also relates to methods of designing and making the compounds, as well as methods screening for compounds that inhibit mitochondrial ceramidase. The invention also relates to the use of the compounds as a regulator of the level of ceramide by inhibiting ceramidase activity. The invention also relates to methods for the prevention and treatment of diseases associated with cell overproliferation and sphingolipid signal transduction including cancer, cardiovascular diseases, and inflammation.
摘要:
The present invention includes methods for the synthesis of sphingomyelins and dihydrosphingomyelins. The present invention also includes methods for the synthesis of sphingosines and dihydrosphingosines. The present invention further includes methods for the synthesis of ceramides and dihydroceramides.
摘要:
The invention provides for synthesis of a (S-R) dihydroxy-amino-methylalkylene characterized by the general formula I, or its R-S diastereomer, wherein R1 is CH 2 OH or CH 2 -CH 2 OH, and R2 is C 2 to C 20 alkyl, whereby a compound characterized by the general formula II, with R3, R4 and R5 being protecting groups for amino and hydroxyl functions, respectively, is used as a starting material. The invention further provides novel intermediates for syntheses of, and analogues to, cis -4-methylsphingosine.
摘要:
This application discloses an improved process for the preparation of N-methyl-N-(1-naphthylmethyl)-6,6-dimethyl-2-hydroxyheptan-4-ynyl-1-amine, a key intermediate used in the synthesis of terbinafine ((E)-N-(6,6-dimethyl-2-hepten-4-ynyl)-N-methyl-1-naphthalenemethanamine). Process is involving converting tertiary-butylacetylene to its Grignard derivative via transmetallation using lower alkylmagnesium halides and treating it with 1-[N-methyl-N-(1-naphtylmethyl)amino]-2,3-epoxypropane at -10°C to -20°C, slowly heating the reaction mass to reflux temperature and quenching of reaction mass with ammonium chloride to give the compound of the formula-I as crystalline solid.
摘要:
Synthetic methods are disclosed for the production from glucose of analogs of sphingosine, azidosphingosine, ceramides, lactosyl ceramides, glycosyl phytosphingosine, and enantiomeric derivatives of phytosphingosine and/or its homologues, for use in pharmaceutical applications. The disclosed syntheses are simple, direct and easily scaled.
摘要:
A process is provided for preparing chirally pure S-enantiomers of alpha -amino acids comprising the steps of: a) preparing an organometallic reagent from an alkyl halide of the Formula (R)2CH(CH2)nCH2X; b) adding the organometallic reagent to carbon dioxide to afford a carboxylic acid; c) activating the carboxylic acid with an acid chloride, phosphorus trichloride, acid anhydride, or thionyl chloride in the presence of a tertiary amine base; d) reacting the product of step c) with an alkali metal salt of S-4-benzyl-2-oxazolidinone; e) treating the product of step d) with a strong non-nucleophilic base to form an enolate anion; f) trapping the enolate anion with 2,4,6-triisopropylbenzenesulfonyl azide to afford an oxazolidinone azide; g) hydrolyzing the oxazolidinone azide with an aqueous base to afford an alpha -azido acid; h) reducing the alpha -azido acid to the alpha -amino acid; and i) recrystallizing the alpha -amino acid to the chirally pure alpha -amino acid. A process is also provided for preparing chirally pure S-enantiomers of beta -amino alcohols further comprising the steps of reducing the crude alpha -amino acid to the beta -amino alcohol and recrystallizing the beta -amino alcohol to the chirally pure beta -amino alcohol. A process is further provided for preparing chirally pure S enantiomers of N-sulfonyl beta -amino alcohols further comprising the steps of sulfonylating the beta -amino alcohol with 5-chloro-thiophene-2-sulfonyl halide; and recrystallizing to afford the chirally pure N-sulfonyl beta -amino alcohols.