摘要:
A series of alkanoarachidonic acids have been prepared as modulators of the arachidonic acid cascade to increase the production of biologically desirable compounds and minimize the production of biologically undesirable compounds. Examples of desirable compounds in this respect comprise postaglandins and thromboxanes whereas undesirable compounds comprise the mono- and polyhydroxyarachidonic acids and leukotrienes. The alkanoarachidonic acids and their intermediates are of the general formula: ##STR1## and at least one of X, Y, and Z is lower alkano and is hydrogen when not lower alkano; the esters and salts of the acids are also prepared. The acids, esters and salts may be used as anti-anaphylaxis or anti-thrombosis agents.
摘要:
A compound of the formula ##STR1## wherein n is an integer from 2 to 4;m is an integer from 3 to 5;R is OM, OR.sub.1 or NR.sub.2 R.sub.3 where M is a pharmaceutically acceptable cation;R.sub.1, R.sub.2 and R.sub.3 are the same or different and selected from the group consisting of hydrogen, C.sub.1 -C.sub.2 branched, unbranched or cyclic alkyl aryl and aralkyl; or R.sub.2 and R.sub.3 taken together from a group of the formula ##STR2## can be used as an inhibitor of the lipoxygenase pathway of the arachidonic acid cascade in animals.
摘要:
A compound of the formula ##STR1## wherein n is an integer from 2 to 4; m is an integer from 3 to 5; R is OM, OR.sub.1 or NR.sub.2 R.sub.3 where M is a pharmaceutically acceptable cation;R.sub.1, R.sub.2 and R.sub.3 are the same or different and selected from the group consisting of hydrogen, C.sub.1 -C.sub.12 branched, unbranched or cyclic alkyl, aryl and aralkyl; or R.sub.2 and R.sub.3 taken together form a group of the formula ##STR2## can be used as an inhibitor of the lipoxygenase pathway of the arachidonic acid cascade in animals.
摘要:
The invention relates to epothilone analog represented by the formula I wherein (i) R2 is absent or oxygen; “a” can be either a single or double bond; “b” can be either absent or a single bond; and “c” can be either absent or a single bond, with the proviso that if R2 is oxygen then “b” and “c” are both a single bond and “a” is a single bond; if R2 is absent then “b” and “c” are absent and “a” is a double bond; and if “a” is a double bond, then R2, “b” and “c” are absent; R3 is a radical selected from the group consisting of hydrogen; lower alkyl; —CH═CH2; —C≡CH; —CH2F; —CH2Cl; —CH2—OH; —CH2—O—(C1-C6-alkyl); and —CH2—S—(C1-C6-alkyl); R4 and R5 are independently selected from hydrogen, methyl or a protecting group; and R1 is as defined in the specification, or a salt of a compound of the formula I where a salt-forming group is present. A further aspect of the invention is related to the synthesis of epothilone E. These compounds have inter alia microtubuli depolymerisation inhibiting activity and are e.g. useful against proliferative diseases.
摘要:
A highly active synthetic epothilone compound whose activity exceeds that of either epothilone EpoA or EpoB when assayed as a cytotoxic agent against a cancer cell line is disclosed as is a pharmaceutical composition containing the synthetic epothilone.
摘要:
Epothilone A, epothilone B, analogs of epothilone and libraries of epothilone analogs are synthesized. Epothilone A and B are known anticancers agents that derive their anticancer activity by the prevention of mitosis through the induction and stabilization of microtubulin assembly. The analogs of epothilone are novel. Several of the analogs are demonstrated to have a superior cytotoxic activity as compared to epothilone A or epothilone B as demonstrated by their enhanced ability to induce the polymerization and stabilization of microtubules.
摘要:
Intermediates useful in preparing the calicheamicin and esperamicin oligosaccharides, and particularly the sulfur- and O-substituted hydroxylamine-containing B ring of both oligosaccharides, are disclosed as are methods of making and using the same, including the preparation of chimeric antibiotics using the same.
摘要:
Quinone- and hydroquinone-containing cyclic enediyneols and enediyneones having 10-carbon atoms in the enediyne-containing ring that cleave DNA are disclosed, as are methods of making and using the same.
摘要:
Stable biologically active thromboxane A.sub.2 analogues having the formula: ##STR1## wherein R.sup.1 is OR.sup.3, where R.sup.3 represents hydrogen or a pharmaceutically acceptable cation or lower alkyl group; orR.sup.1 is NR.sup.4 R.sup.5 where R.sup.4 and R.sup.5 are the same or different substituents selected from the group consisting of hydrogen and lower alkyl group; andR.sup.2 is hydrogen or an -OH group.The thromboxane analogues are potent thrombotic agents, useful in cardiovascular treatment.
摘要翻译:具有下式的稳定的生物活性凝血恶烷A2类似物:其中R1是OR3,其中R3代表氢或药学上可接受的阳离子或低级烷基; 或R 1是NR 4 R 5,其中R 4和R 5是相同或不同的选自氢和低级烷基的取代基; R2为氢或-OH基。 血栓素类似物是有效的血栓形成剂,可用于心血管治疗。