摘要:
The invention relates to naphthalenesulfonic-pyrrolecarboxamido compounds of formula ##STR1## wherein n is zero or an integer of 1 to 3; R is a sulfonic acid residue; m is an integer of 1 to 3, or a pharmaceutically acceptable salt thereof, which are active as antiviral agents, in particular against Human Immunodeficiency Virus
摘要:
The present invention provides cephalosporin sulphones of formula (I) and the pharmaceutically and veterinarily acceptable salts thereof: ##STR1## wherein n is one or two: A and B are both or each independently hydrogen or an organic radical;R.sup.1 represents halogen, A, OA, --S(O).sub.m A wherein m is 0-2, --OC(O)A, --OS(O).sub.2 A, --NHC(O)A or --NH--Z wherein Z is a mono, di- or tripeptide and A is as defined above;R.sup.2 represents a halogen, A, --S(O).sub.m A, --O--A, --C(O)A, --C(O)OA, --CH.sub.2 --OA, --CH.sub.2 S(O).sub.m A, --CH.sub.2 OC(O)A, --CH.sub.2 O--Z, --CH.sub.2 SC(O) A, --CH.sub.2 --N(A)A, --CH.sub.2 N.sup.+ (A)(A')A", --CH.sub.2 NH--C(O)A or --CH.sub.2 NH--Z wherein A and Z are as defined above.The compounds of formula (I) and their salts are elastase inhibitors.
摘要:
A protein, which is useful as an antagonist of hepatocyte growth factor, is composed of two disulphide-linked chains of 50 kDa and 75 or 85 kDa respectively, the 5 kDa chain being the .alpha.-chain of the tyrosine kinase encoded by the MET protooncogene and the 75 or 85 kDa chain being a C-terminal truncated form of the .beta.-chain of the said tyrosine kinase.
摘要:
The ability to convert carminomycin to daunorubicin can be conferred on a host by transforming the host with a recombinant vector comprising a DNA having the configuration of restriction sites shown in FIGS. 2, 3 and 4 and a nucleotide sequence shown in FIG. 3 of the accompanying drawings or a restriction fragment derived therefrom containing a gene coding for carminomycin 4-O-methyltransferase.
摘要:
A polymer conjugate consisting essentially of: from 90 to 99.9 mol % of units represented by the formula ##STR1## from 0.1 to 5 mol % of units represented by the formula ##STR2## wherein one of R.sub.1 and R.sub.2 is a copolymer residue of the formula ##STR3## and the other one is hydrogen atom; from 0 to 9.9 mol % of units represented by the formula ##STR4## wherein R is a phenyl or t-butoxy group, R.sub.3 is H or an acetyl group, A and A.sub.1 which may be the same or different, represent a chemical single bond, an amino acid residue or peptide spacer selected from .beta.Ala, Gly, Phe-Gly, Phe-Phe-, Leu-Gly, Val-Ala, Phe-Ala, Leu-Phe, Leu-Ala, Phe-Leu-Gly, Phe-Phe-Leu, Leu-Leu-Gly, Phe-Tyr-Ala, Phe-Gly-Phe, Phe-Phe-Gly, Phe-Leu-Gly-Phe, Gly-Phe-Leu-Gly-Phe,Gly-.beta.Ala, Phe-Gly-.beta.Ala, Phe-Phe-.beta.Ala, Leu-Gly-.beta.Ala, Val-Ala-.beta.Ala, Phe-Ala-.beta.Ala, Leu-Phe-.beta.Ala, Leu-Gly-.beta.Ala, Phe-Leu-Gly-.beta.Ala, Phe-Phe-Leu .beta.Ala, Leu-Leu-Gly-.beta.Ala, Phe-Tyr-Ala-.beta.Ala, Phe-Gly-Phe-.beta., Phe-Phe-Gly .beta.Ala, Phe-Leu-Gly-Phe-.beta.Ala or Gly-Phe-Leu-Gly-Phe-.beta.Ala. The compounds are endowed with antitumor activity and show improved water solubility and decreased toxicity in comparison with paclitaxel or its known analogs. A method for their preparation and pharmaceutical compositions containing them are also described.
摘要:
The invention provides new compounds of formula (I) ##STR1## wherein n is an integer of 1 to 4; each of R and R.sub.1, which may be the same or different, is hydrogen, halogen, trifluoromethyl or C.sub.1 -C.sub.4 alkoxy; R2 is hydrogen or C.sub.1 -C.sub.4 alkyl; and a pharmaceutically acceptable salts thereof; and wherein when, at the same time, R is hydrogen, R.sub.1 is hydrogen or halogen and n is one, then R.sub.2 is other than hydrogen or methyl; and of formula (IA) ##STR2## wherein R.sub.3 is halogen, and a pharmaceutical acceptable salt thereof, which are active on the central nervous system (CNS) and can be used in therapy as anti-epileptics, anti-Parkinson, neuroprotective, antidepressant, anti-spastic and hypnotic agents.
摘要:
The present invention relates to anti-thrombin polypeptides isolated from the leech Hirudinaria manillensis and to processes for their preparation. The polypeptides of the invention may be modified by way of amino acid extension at either or each end, and may be subjected to post-translational modification. The anti-thrombin polypeptides may be prepared by isolating them from the tissue or secretions of the leech Hirudinaria manillensis but they also may be synthetized by recombinant DNA methods. According to this latter aspect, the invention provides DNA sequences, expression vectors and host cell lines for the recombinant preparation of the polypeptides. The anti-thrombin polypeptides of the invention find an useful application in the treatment of venous thrombosis, vascular shunt occlusion and thrombin-induced disseminated intravascular coagulation.
摘要:
The present invention relates to compounds having the following formula (I) ##STR1## wherein X represents --O-- or --S--;each of R and R.sub.1, independently, is hydrogen, halogen, hydroxy, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkoxy, amino, nitro or trihalo-C.sub.1 -C.sub.6 alkyl;each of R.sub.2 and R.sub.3, independently, is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.2 -C.sub.6 alkenyl, C.sub.2 -C.sub.6 alkynyl or phenyl-C.sub.1 -C.sub.6 alkyl; or R.sub.2 and R.sub.3, taken together with the nitrogen atom to which they are linked, form an unsubstituted or substituted, 6-membered, saturated, heteromonocyclic ring optionally containing a further heteroatom chosen from oxygen, sulphur and nitrogen;each of R.sub.4 and R.sub.5, independently, is hydrogen, halogen, nitro, amino or trihalo-C.sub.1 -C.sub.6 alkyl; and the pharmaceutically acceptable salts thereof.The compounds of the invention are useful in therapy as major tranquilizers e.g., in the management of psychotic disorders.
摘要:
The present invention concerns steroidic 5.alpha.-reductase inhibitors having the following formula (I) ##STR1## wherein Y is oxygen or sulphur;R is a group;a) --OR.sub.4, wherein R.sub.4 is hydrogen or a C.sub.1 -C.sub.6 alkyl group;b) ##STR2## wherein each of R.sub.5 and R.sub.6, independently, is hydrogen or a C.sub.1 -C.sub.6 alkyl group;c) ##STR3## wherein R.sub.7 is hydrogen or a C.sub.1 -C.sub.6 alkyl group and W is a group:(i) ##STR4## wherein R.sub.8 is a C.sub.1 -C.sub.6 alkyl group, a C.sub.5 -C.sub.6 cycloalky group, a C.sub.6 -C.sub.6 cycloalkylalkyl group, a phenyl group or a benzyl group; or(ii) ##STR5## wherein R.sub.9 is a C.sub.1 -C.sub.6 alkyl group or a C.sub.5 -C.sub.6 cycloalkyl group; or(iii) ##STR6## wherein R.sub.5 and R.sub.6 are as defined above; d) ##STR7## wherein each of R.sub.10 and R.sub.11 is, independently, hydrogen or a C.sub.1 -C.sub.6 alkyl group or taken together with the nitrogen atom to which they are linked form a pentatomic or hexatomic saturated heteromonocyclic ring, optionally containing at least one additional heteroatom selected from oxygen and nitrogen, and n is an integer of 2 to 4;R.sub.1 is hydrogen, a C.sub.1 -C.sub.6 alkyl group, a C.sub.5 -C.sub.6 cycloalkyl group, a C.sub.6 -C.sub.9 cycloalkyalkyl group or an aryl group;each of R.sub.2 and R.sub.3 is, independently, selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.9 cycloalkylalkyl and aryl or R.sub.2 and R.sub.3, taken together with the nitrogen atom to which they are linked, form a pentatomic or hexatomic saturated heteromonocyclic ring, optionally containing at least one additional heteroatom selected from oxygen and nitrogen; and the symbol ( ) represents a single or a double bond provided that when it is a double bond the hydrogen in the 5.alpha. position doesn't exist and the pharmaceutically acceptable salts thereof.In view of their 5-.alpha. reductase inhibiting activity the compounds of the invention can be useful for the treatment of androgen dependent conditions.