摘要:
An antibiotic compound of formula (III): or a salt or stereoisomer thereof; wherein R1-R3 and R5-R10 are independently selected from the group consisting of H, alkyl group, substituted alkyl group, halogen, OH, NH2 and SH; R4 is H, alkyl group or substituted alkyl group; X1-X2 are independently selected from the group consisting of ═O, ═S, NH, H, alkyl, halogen, OH, SH and NH2; W is a saturated acyclic hydrocarbon chain of 1 to 15 carbon atoms; and Z is a neutral or positively charged organic group. The compounds are useful in treating bacterial diseases.
摘要:
This invention concerns novel bidentate ligands L having two phosphorus or arsenic atoms. Cationic complexes of the ligands with Technetium-99m, e.g. having the formula [TcO.sub.2 L.sub.2 ].sup.+, are useful for body imaging, particularly myocardial imaging. The ligands have the general formulaY.sub.2 QZQY.sub.2where Q is phosphorus orZ is a --CC-- or --CCC-- or --COC-- groups,the four groups Y are all C1-C8 saturated hydrocarbon or fluorohydrocarbon with 1-3 ether oxygen atoms.
摘要:
Phosphonoacetals of the formula ##STR1## wherein R.sup.1 is an alkyl group having from 1-3 carbon atoms;R.sup.2 is a hydrogen atom or a cation such as NH.sub.4.sup.+, Na.sup.+, K.sup.+, Ca.sup.2+, Sn.sup.2+, Zn.sup.2+, Cd.sup.2+, Cu.sup.2+, and R.sup.1 ;n is an integer from 0 to 2;q is an integer from 1 to 3;R.sup.3 is a residue of a polyhydroxy compound having from 2-12 carbon atoms;Y and Y.sup.1 are each selected from the group consisting of hydrogen atoms, hydroxyl groups, carbinol groups, methyl halogens, methyl carbamoyls.
摘要:
Chemical compounds having a substituted oxepane ring and methods of preparing such compounds are described. The compounds are active as utero-evacuant agents.
摘要:
Preparation of Alpha , Beta -unsaturated carbocyclic ketones by reacting an enol lactone with a carbanion generated by treatment of a methylphosphonate or a mono-substituted methylphosphonate with base.
摘要:
The present invention relates to a condensed heterocyclic compound that has an enteropeptidase inhibitory effect and is useful in the treatment or prevention of obesity, diabetes mellitus, or the like, and a medicament containing the same. Specifically, the present invention relates to a compound represented by the following formula (I) or a salt thereof, and a medicament containing the same [in the formula, each symbol is as defined in the specification].
摘要:
New compounds have the formula I: ##STR1## wherein R is a C.sub.1 -C.sub.12 straight or branched chain alkyl residue, a C.sub.2 -C.sub.12 straight or branched chain alkenyl residue, a C.sub.5 -C.sub.12 cycloalkyl residue, a C.sub.6 -C.sub.10 aryl residue or a C.sub.7 -C.sub.12 aralkyl residue; and X is a C.sub.1 -C.sub.10 straight or branched alkylene residue, a C.sub.2 -C.sub.10 straight or branched chain alkenylene residue or a C.sub.6 -C.sub.10 arylene residue; as well as derivatives of the compounds of formula I; and enantiomers, racemic mixtures, and mixtures of diastereomers.The new compounds are useful e.g. as corrosion inhibitors in aqueous systems.
摘要:
2-Substituted-1,3-propylidenediphosphonates of formula (I), where A, R.sup.1 and R.sup.2 are defined in claim 1, are therapeutically active compounds, namely for the treatment of cardiovascular diseases.They can be prepared by reacting phosphonating agents with 1,3- dibromopropanes or ditosylates of 1,3-propanediols substituted in position 2. ##STR1## .
摘要:
Chemical compounds having a substituted oxepane ring and methods of preparing such compounds are described. The compounds are active as utero-evacuant agents.