摘要:
The present invention relates to novel colchicine derivatives having antiproliferative, antineoplastic, anti-inflammatory and muscle relaxant activities; said derivatives include novel colchine nitrogen amides for use either as such or after derivatization of the hydroxyl at C3 of the aromatic ring and at C10 of the tropolone ring. These novel compounds have a cytotoxicity on human tumoral cell lines comparable with colchicine but, in comparison with the latter, they are much more active on cells resistant to the usual antiblastics. The compounds can be included in pharmaceutical formulations useful for the intravenous, oral and topical administrations.
摘要:
Present invention discloses a novel process for extraction of non-toxic, high purity colchicoside from Gloriosa superba and extract thereof. Present invention utilizes a novel non-chromatographic, simple and less timing consuming process. The process disclosed in present invention involve extraction of G. superba seeds using methanol, isolation of colchicine using non-polar solvent chloroform, isolation of colchicoside using n-butanol, removal of N-formyl impurity from colchicoside by using acid catalyst optimally hydroxylamine hydrochloride in methanol with traces of water optimally 1% water and further NMR spectroscopic analysis to detect the presence or absence of N-formyl impurity within the extracted pure product. By employing the method of present invention colchicoside of >90% purity is obtained.
摘要:
Colchicine neoglycosides, method for their synthesis and methods for their use are disclosed. The invention provides analogs of colchicine glycosylated to include a sugar moiety on a colchicine scaffold that is generally unglycosylated in nature. The colchicine neoglycosides disclosed herein are shown to have cytotoxic effects equivalent to at least the known cytotoxins paclitaxel and doxorubicin. Further, the neoglycosides disclosed according to the invention have physiologic effects not previously recognized in the alkaloid family that includes colchicine but recognized in other cytotoxic drug families such as the taxanes which act by stabilizing tubulin formation.
摘要:
The invention relates to a process for the preparation of colchicine 1 from colchicoside 2 which comprises enzymatic conversion of colchicoside 2 to 3-O- demethylcolchicine 3, wherein the enzyme used is a cellulase. According to another aspect of the invention, 3-O-demethylcolchicine 3 can be converted to colchicine 1 using an alkylating agent. The invention also relates to a process for enriching the colchicine 1 content of extracts from plants belonging to the Colchicaceae family containing colchicine 1, colchicoside 2 and 3 -(9-demethyl colchicine 3, which comprises conversion by means of a colchicoside 2 cellulase to 3-O-demethylcolchicine 3, followed by conversion of 3-O-demethylcolchicine 3 to colchicine 1 using an alkylating agent.
摘要:
Colchicine neoglycosides, method for their synthesis and methods for their use are disclosed. The invention provides analogs of colchicine glycosylated to include a sugar moiety on a colchicine scaffold that is generally unglycosylated in nature. The colchicine neoglycosides disclosed herein are shown to have cytotoxic effects equivalent to at least the known cytotoxins paclitaxel and doxorubicin. Further, the neoglycosides disclosed according to the invention have physiologic effects not previously recognized in the alkaloid family that includes colchicine but recognized in other cytotoxic drug families such as the taxanes which act by stabilizing tubulin formation.
摘要:
The present invention relates to colchicine derivatives, in particular to the 3-demethyl and 3-demethylthio-colchicine of the general formula (I) in which X is oxygen or sulfur, a method for the preparation thereof and pharmaceutical compositions containing them. The compounds of formula (I) have muscle relaxing, anti-inflammatory and anti-gout activity.
摘要:
The invention relates to the use of compounds of formula (I): wherein X is -C(O)-, -C(S)-, -C=NOH, or -CH(R )- wherein R is hydrogen, hydroxy, C1-7alkoxy, -OR or -NR R (wherein R is a group -Y R (wherein Y is a direct bond, -C(O)-, -C(S)-, -S-, -C(O)O, -C(O)NR -, -SO2- or -SO2NR - (wherein R and R , which may be the same or different, each independently represents hydrogen, C1-3alkyl or C1-3alkoxyC2-3alkyl) and R is as defined herein, and R includes hydrogen; R , R and R are as defined herein and are preferably methyl; R , R and R are as defined herein with the proviso that R is not hydroxy, alkoxy, substituted alkoxy, -OPO3H2, -O-C1-7alkanoyl or benzyloxy; and salts thereof in the manufacture of a medicament for use in the production of a vascular damaging effect in warm-blooded animals such as humans. The present invention further relates to compounds of the formula (I), pharmaceutical compositions containing them, processes for their preparation and to a method of treatment using the compounds to produce a vascular damaging effect in a warm-blooded animal such as a human. The compounds of formula (I) and the pharmaceutically acceptable salts thereof may be useful in the treatment of a number of disease states including cancer and rheumatoid arthritis.
摘要翻译:本发明涉及式(I)化合物的用途:其中X是-C(O) - , - C(S) - , - C = NOH或-CH(R 7) - ,其中R 7 >是氢,羟基,C 1-7烷氧基,-OR 8或-NR 8 R 9(其中R 8是基团-Y 1 R 10(其中Y 1是 -C(O) - , - C(O)O,-C(O)NR 11 - , - SO 2 - 或-SO 2 NR 12 - (其中R 11和R 12可以相同或不同,各自独立地表示氢,C 1-3烷基或C 1-3烷氧基C 2-3 - 烷基),R 10如本文所定义,R 9, 包括氢; R 1,R 2和R 3如本文所定义,并且优选为甲基; R 4,R 5和R 6如本文所定义,条件是R“ 5>不是羟基,烷氧基,取代的烷氧基,-OPO 3 H 2,-O-C 1-7烷酰基或苄氧基;及其盐在制备用于在温血动物如人中产生血管损伤作用的药物 本发明还涉及式(I)的化合物,含有它们的药物组合物, 以及使用该化合物在温血动物如人中产生血管损伤作用的治疗方法。 式(I)化合物及其药学上可接受的盐可用于治疗许多疾病状态,包括癌症和类风湿性关节炎。
摘要:
A process for the preparation of compounds having formula (I) is disclosed, wherein: - R 1 is a methoxy or methylthio group; - R 2 is a O-glycosyloxy residue. Compounds having formula (I) are prepared by reacting the corresponding precursor having R 2 = OH and the suitably protected 1-acetyl- glycose.
摘要:
The present invention relates to 3-demethoxy-3-aminothiocolchicine glycosyl derivatives of general formula (I) in which R is hydrogen, methyl or hydroxymethyl. The compounds of formula (I) have myorelaxant and anti-inflammatory activity.