摘要:
This invention relates to a new class of penicillins (I) and their pharmaceutically acceptable salts which are useful as antibiotics: ##STR1## wherein the stylized radical (hereafter referred to as R'): ##STR2## attached to the 6-amino nitrogen moiety of the penicillin nucleus represents a mono- or polycyclic N-containing heterocyclic group; and R is, inter alia, hydrogen, substituted and unsubstituted: alkyl, aryl, alkenyl, heterocyclylalkyl, heterocyclylalkenyl, aralkenyl, aralkyl, --NR.sub.2, COOR, CONR.sub.2,--OR, or CN.
摘要:
In various embodiments, the system comprises a system for storing radioactive material, wherein the system includes a storage pool for storing a plurality of radioactive objects submersed in a radiation shielding and cooling liquid. The system additionally includes an assembly building located above the storage pool for constructing one or more radioactive articles using the radioactive objects transferred from the storage pool. Furthermore, the system includes at least one transfer shaft connecting the storage pool and the assembly building. The transfer shaft(s) are used for transferring the radioactive objects directly from within the storage pool to an interior of the assembly building and directly from the interior of the assembly building into the storage pool.
摘要:
A series of peptides has been found to inhibit the activity of the ribonucleotide reductase enzyme of herpes simplex virus in vitro thereby inhibiting viral replication.
摘要:
Novel cephalosporin compounds having a substituted or unsubstituted vinyl group at the 3-position are prepared by the reaction of a phosphoranylidene compound with a compound containing a carbonyl group. The novel cephalosporin compounds are active against a range of gram-negative and gram-positive microorganisms and are of value in human and veterinary medicine.
摘要:
Disclosed are antibiotic cephalosporins (I) of the formula: ##STR1## Wherein the stylized radical attached to the 7-amino nitrogen of the cephalosporin moiety represents a nitrogen-containing heterocyclic group (mono- or polycyclic); R is, inter alia, hydrogen, alkyl, heterocyclylalkyl, aryl, alkenyl, aralkyl, --NR.sub.2, --OR, COOR, CONR.sub.2 or CN; R.sup.o is H or CH.sub.3 ; and R.sup.2 is H, or loweralkoxyl: Also disclosed are the pharmaceutically acceptable salt and ester derivatives of I; processes for the preparation of such compounds, pharmaceutical compositions comprising such compounds; and methods of treatment comprising administering such compounds and compositions when an antibiotic effect is indicated.
摘要:
This invention relates to a new class of antibiotics (I): ##STR1## wherein the stylized radical (hereafter referred to as R'): ##STR2## attached to the 3-amino nitrogen of nocardicin represents a mono- or polycyclic N-containing heterocyclic group; R is, inter alia, hydrogen, substituted and unsubstituted: alkyl, aryl, alkenyl, heterocyclylalkyl, heterocyclylalkenyl, aralkenyl, aralkyl, --NR.sub.2, COOR, CONR.sub.2, --OR, or CN.
摘要:
Novel compounds of the following formula: ##STR1## wherein R' is alkyl of 1 to 3 carbon atoms, X.sup.- is a nontoxic anion; b and c are positive numbers having values such that the positive charge of b moles of cation are neutralized by c moles of anion X.sup.- ; and -.sup.+ is a bicyclic heterocyclic base, of the group consisting of: ##STR2## wherein the dotted lines indicates that the methyl group can be present or a hydrogen group can be present, with the proviso that the two alpha methyl groups are not present at the same time, but that one alpha methyl group is required. These compounds have superior coccidiostatic activity.
摘要翻译:下式的新型化合物:其中R'是1至3个碳原子的烷基,X是无毒阴离子; b和c是正数,其值使得b摩尔阳离子的正电荷被c摩尔阴离子X + 31 {L; 和+是双环杂环碱,由以下组成的组:A + TR B + TR C 其中虚线表示甲基可以存在或可以存在氢基团 ,条件是两个α甲基不同时存在,但需要一个α甲基。 这些化合物具有优异的抗球虫抑制活性。
摘要:
Novel compounds of the following formula: ##STR1## WHEREIN R' is alkyl of 1 to 3 carbon atoms, X.sup.- is a nontoxic anion; b and c are positive numbers having values such that the positive charge of b moles of cation are neutralized by c moles of anion X.sup.-; and -N is a bicyclic heterocyclic base, of the group consisting of: ##STR2## wherein the dotted line indicates that the methyl group can be present or a hydrogen group can be present, with the proviso that the two alpha methyl groups are not present at the same time, but that one alpha methyl group is required. These compounds have superior coccidiostatic activity.
摘要:
The pentapeptide Val Val Asn Asp Leu has been found to be the shortest peptide sequence that inhibits the activity of the ribonucleotide reductase enzyme of herpes simplex virus in vitro thereby inhibiting viral replication. Longer peptides containing the foregoing pentapeptide sequence are more potent inhibitors.
摘要翻译:已经发现五肽Val Val Asn Asp Leu是体外抑制单纯疱疹病毒核糖核苷酸还原酶活性的最短肽序列,从而抑制病毒复制。 含有前述五肽序列的较长的肽是更有效的抑制剂。