Abstract:
Ergot alkaloids having interesting pharmacological activities, for instance in the therapy of migraine or hypertension. Such compounds are obtained in a fermentative process using mutant strains of Claviceps purpurea eventually hydrogenating the products thus obtained.
Abstract:
New ergoline derivatives are disclosed which are compounds of formula (I) having the structure: ##STR1## wherein R.sub.1 is hydrogen or methoxy; R.sub.2 is hydrogen or methyl; andX is hydroxy, R.sub.3 COO, S--R.sub.4 or NR.sub.5 R.sub.6 in which R.sub.3 is a straight or branched alkyl having from 1 to 6 carbon atoms, unsubstituted- or substituted-phenyl, the substituents being selected from the class consisting of chlorine, bromine, alkyl or alkoxy having from 1 to 4 carbon atoms, cycloalkyl containing from 3 to 6 carbon atoms, or a heterocycle;R.sub.4 is phenyl or a heterocycle, andR.sub.5 and R.sub.6 are alkyl having from 1 to 4 carbon atoms, or together with the N atom to which they are attached, forming a heterocycle. The heterocycle may be a 5- or 6-membered ring which contains from 1 to 3 hetero atoms selected from the class consisting of nitrogen, oxygen and sulphur, and may be saturated or unsaturated, and unsubstituted or substituted by halogen, alkyl having from 1 to 3 carbon atoms, hydroxy, nitro, amino, CONHNH.sub.2 and COOH.
Abstract translation:公开了新的麦角灵衍生物,其是具有以下结构的式(I)的化合物:其中R 1是氢或甲氧基; R2是氢或甲基; 并且X是羟基,R 3 COO,S-R 4或NR 5 R 6,其中R 3是具有1至6个碳原子的直链或支链烷基,未取代或取代的苯基,所述取代基选自氯,溴,烷基 或具有1至4个碳原子的烷氧基,含3至6个碳原子的环烷基或杂环; R 4是苯基或杂环,R 5和R 6是具有1至4个碳原子的烷基,或与它们相连的N原子一起形成杂环。 杂环可以是含有1至3个选自氮,氧和硫的杂原子的5或6元环,并且可以是饱和或不饱和的,未取代的或被卤素取代的烷基,具有1个 至3个碳原子,羟基,硝基,氨基,CONHNH 2和COOH。
Abstract:
The known antibiotics adriamycin and its .beta.-anomer, and the novel compounds, 4'-epiadriamycin (both .alpha.- and .beta.-anomers) are prepared by condensing a novel, reactive protected derivative of adriamycinone with reactive intermediates which are 1-halo-2,3,6-trideoxy-3-trifluoroacetamido-4-trifluoroacetoxy-.alpha.-L-lyxo (or arabino) hexopyranoses.
Abstract:
A process is disclosed for preparing azetidonethiazolidines of the formula ##STR1## where R and V are defined herein below, wherein a compound of the structure ##STR2## dissolved in a suitable solvent, is treated at about 0.degree. C with a solution of preferably anhydrous hydrochloric acid in a lower aliphatic alcohol with a slight excess of sodium cyanoborohydride.
Abstract:
The cardiotoxic effects incident to the use of glycosidic anthracyclinones such as adriamycin, daunomycin, etc., in antitumor therapy, are substantially reduced by administering to a host undergoing such therapy, and effective amount of coenzymes Q, particularly Co-Q.sub.10 (Ubiquinone Q.sub.10).
Abstract:
Anthracyclinone glycoside antibiotics including the known antibiotics daunomycin and adriamycin, as well as other, novel glycoside antibiotics of the formula (VIII): ##STR1## wherein WHEN R.sub.1 is hydrogen, R.sub.2 and R.sub.3 are each independently hydrogen, methyl, methoxy, chloro, or bromo; and when R.sub.2 and R.sub.3 are hydrogen, R.sub.1 is methyl, chloro, or bromo and R.sub.4 and R.sub.5 are each independently hydrogen or hydroxy are prepared by an acid catalyzed addition reaction between (a) an anthracyclinone compound of the formula ##STR2## or a dioxolanyl protected derivative thereof (VI) having the formula: ##STR3## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are as defined above, and R.sub.6, R.sub.7 and R.sub.8 are independently selected from the group consisting of hydrogen and C.sub.1 -C.sub.4 alkyl; or R.sub.7 and R.sub.8, together with the carbon atom to which they are bound may form a saturated or unsaturated ring of 3-8 carbon atoms and (b) a novel reactive, protected 1,2-unsaturated pyranoid sugar, preferably, 1,2,3,6-tetradeoxy-3-trifluoroacetamido-4-trifluoroacetoxy-L-lyxo-hex-1-enopyranose which forms protected derivatives of said glycoside antibiotics and then removing the protecting groups from said glycoside antibiotics. These antibiotics are useful in the treatment of various human cancers and leukemia such as sarcomas, breast cancer, bronchogenic carcinoma, malignant lymphomas, neuroblastomas, acute leukemia and bladder cancer.
Abstract:
A process is disclosed for preparing compounds of structure: ##STR1## where R.sup.1 is hydroxyl, alkoxy with 1 to 4 carbon atoms, trichloroethoxy, benzyloxy, p-methoxybenzyloxy, p-nitrobenzyloxy, benzhydryloxy, triphenylmethoxy, phenacyloxy, or p-halophenacyloxy;Z is hydrogen, hydroxyl, --O-alkyl, --O--CO-alkyl, --Br, --I, --N.sub.3, --O--CO--CH.sub.3, O--CO--NH.sub.2, or an S-mononuclear heterocyclic ring,Starting from ##STR2## where R is hydrogen, alkyl having from 1 to 4 carbon atoms, cyano-methyl, thienyl-methyl, furyl-methyl, naphthyl-methyl, phenyl-methyl, phenoxy-methyl, phenyl-isopropyl, phenoxy-isopropyl, pyridyl-4-thiomethyl, or tetrazolyl-1-methyl;R.sup.2 and R.sup.3 are lower alkyl, a mononuclear aryl ring, CN, a mononuclear heterocyclic ring or the radicals --COR.sup.4, --COOR.sup.4, ##STR3## --CONHR.sup.4, or R.sub.2 and R.sub.3 together represent ##STR4## where T represents ##STR5## and R.sup.4 is a lower alkyl, a mononuclear aryl or heterocyclic ring, WHEREIN THE COMPOUND (II') is reacted with a phosphorous halide in the presence of a tertiary amine, the corresponding imino chloride is reacted with a lower aliphatic alcohol, the iminoether so formed is hydrolyzed in an acid medium, and the resultant 3-amino-2-.beta.-thiohydrazoazetidinone: ##STR6## in which R.sup.1, R.sup.2, R.sup.3 and Z have the meanings given heretofore,Is reacted between -100.degree. and +120.degree. C. with inorganic basic or weakly acid oxides or inorganic and organic bases, to give (V).
Abstract:
Daunorubicin (also known as daunomycin) derivatives of the formula ##STR1## wherein X is ##STR2## and R is --COCF.sub.3 or H which are prepared by hydrogenating 9-desacetyl-9-keto-N-trifluoroacetyldaunorubicin, an unexpectedly stable key-intermediate which is itself a new compound, are useful in treating certain mammalian tumors.
Abstract:
Daunomycin analogues of the formula: ##STR1## wherein when each R.sub.1 is hydrogen, each R is hydrogen, chlorine, bromine, methyl or methoxy and when each R.sub.1 is chlorine, bromine or methyl, each R is hydrogen, are useful in treating various mammalian tumors and are prepared by reacting a daunomycinone derivative of the formula: ##STR2## wherein R and R.sub.1 are as defined above with 1-chloro-2,3,6-trideoxy-3-trifluoroacetamido-4-trifluoroacetoxy-.alpha.-L-lyxopyranose in an inert anhydrous organic solvent in the presence of a catalyst and a hydrogen chloride acceptor.