摘要:
Substituted 6-hydroxymethyl-carbapenem antibiotics of the formula ##STR1## in which R.sup.1 is --OR.sup.4, ##STR2## A is a direct bond, or an alkylene and/or cycloalkylene radical, R.sup.2 is a group of the formula ##STR3## an aryl or heterocyclic radical, ##STR4## R.sup.3 is a COOH radical, or salt or ester thereof.
摘要:
A process for the preparation of a 2,3-epoxyamide of the formula ##STR1## in which R.sup.1 represents hydrogen or straight-chain or branched C.sub.1 -C.sub.8 -alkyl, which may be substituted by phenyl or halogen, or represents C.sub.3 -C.sub.7 -cycloalkyl, phenyl, C.sub.1 -C.sub.8 -alkoxycarbonyl, or a group of the formula ##STR2## in which R.sup.4 and R.sup.5 are identical or different and denote hydrogen, phenyl, benzyl, acetyl or C.sub.1 -C.sub.8 -alkyl which is optionally substituted by phenyl or halogen,R.sup.2 represents hydrogen or an amino protecting group andR.sup.3 represents a radical which activates the methylene group,comprising reacting a 2-halogeno-3-hydroxyamide of the formula ##STR3## in which X represents fluorine, chlorine, bromine or iodine,with an alkali metal hydroxide in an inert solvent.
摘要:
A process for the preparation of a 4-[3-carboxy-3-diazo-2-oxopropyl]azetidin-2-one of the formula ##STR1## comprising reacting a 4-acetoxy-2-azetininone of the formula ##STR2## with a compound of the formula ##STR3## in an inert solvent, in the presence of a base and of a silylating agent, in a one-pot process.Many of the products are new. The products are useful in the synthesis of carbapenem antibiotics.
摘要:
A process for the preparation of a 7-acylamino-3-hydroxy-2-cephem-4-carboxylic acid, 7-acylamino-3-hydroxy-1-dethia-1-oxa-3-cephem-4-carboxylic acid or derivative thereof of the general formula ##STR1## in which R.sup.1 is hydrogen or optionally substituted alkyl, alkenyl, alkinyl, aralkyl, aryl, heteroaryl, heteroaralkyl, aryloxyalkyl, heteroaryloxyalkyl, alkoxyalkyl, arylthioalkyl, heteroarylthioalkyl, alkylthioalkyl, alkoxy, aryloxy, alkylthio or arylthio,R.sup.2 is hydrogen, a carboxy-protective group or a pharmaceutically useful ester radical, andX is sulphur or oxygen,which comprises:(a) reacting a compound of the formula ##STR2## with (i) a compound of the formula ##STR3## in which R.sup.2 and X have the abovementioned meaning and Y represents diazo (N.sub.2) or hydrogen (H.sub.2) in an inert solvent in the presence of a Lewis acid or proton acid catalyst, or(ii) a compound of the formulaHX--CH.sub.2 --C.tbd.C--COOR.sup.2 to form an intemediate compound having a triple bond, and hydrating the triple bond, the compounds thus obtained, for Y being hydrogen (H.sub.2)--(in case of Y=diazo (N.sub.2) directly the compounds of general formula (2) are obtained) thereby to produce a compound of the formula ##STR4## (b) reacting such compound with an azide in a solvent in the presence of a base to give a compound of the formula ##STR5## (c) converting said compound to the desired product by (i) irradiation in an inert solvent, or(ii) warming in the presence of a catalyst.The end products are, or can be converted to, known .beta.-lactam antibiotics.
摘要翻译:制备7-酰基氨基-3-羟基-2-头孢烯-4-羧酸,7-酰基氨基-3-羟基-1-脱硫-1-氧杂-3-头孢烯-4-羧酸或其衍生物的方法 烯基,炔基,芳烷基,芳基,杂芳基,杂芳烷基,芳氧基烷基,杂芳基氧基烷基,烷氧基烷基,芳硫基烷基,杂芳硫基烷基,烷硫基烷基,烷氧基,芳氧基,烷硫基或芳硫基,其中R 1为氢或任选取代的烷基, R2是氢,羧基保护基或药学上有用的酯基,X是硫或氧,其包括:(a)使式(IMAGE)的化合物与(i)下式化合物 其中R2和X具有上述含义,Y代表重氮(N 2)或氢(H 2)在惰性溶剂中,在路易斯酸或质子酸催化剂存在下,或(ii)式HX-CH2- C 3 C COR CO 2,以形成具有三键的中间体化合物,并且使三键水合,该共聚物 (H)在(Y =重氮(N 2)的情况下直接得到通式(2)的化合物),得到下式的化合物:(b)使此 在碱的存在下在溶剂中与叠氮化合物反应,得到下式的化合物:(c)通过(i)在惰性溶剂中照射将所述化合物转化为所需产物,或(ii)在 存在催化剂。 最终产品是或可以转化为已知的β-内酰胺抗生素。
摘要:
Antibiotically active benzazolylthio-carbapenems of the formula ##STR1## in which R.sup.1 represents hydrogen or a hydroxyl-protecting group,R.sup.2 represents hydrogen or a carboxyl-protecting group or an ester radical which can be cleaved off in vivo,R.sup.3 represents hydrogen or C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.12 -aryl or C.sub.7 -C.sub.14 -aralkyl,R.sup.4 represents hydrogen or represents C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.12 -aryl or C.sub.7 -C.sub.14 aralkyl, or represents C.sub.1 -C.sub.10 -alkylsulphonyl, C.sub.6 -C.sub.12 -arylsulphonyl or C.sub.7 -C.sub.14 -aralkylsulphonyl, or represents an amino-protecting group, or represents a group of the formula ##STR2## in which R.sup.5, R.sup.6 and R.sup.8 are indentical or different and denote hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.12 -aryl or C.sub.7 -C.sub.14 -aralkyl,andX represents O, S, NH or NCH.sub.3,or salts thereof.
摘要:
1-Oxadethiacephalosporin derivatives of the formula ##STR1## in which R.sup.1 denotes hydrogen or halogen,R.sup.2 denotes hydrogen or methoxy,A is a nitrogen-containing positively charged N-containing heterocyclic 5-membered to 7-membered ring which in total can contain up to 4 heteroatoms from the group of N, O and S, to which ring up to two further rings can be fused and which ring may optionally be substituted, the ring being bonded via N,B denotes optionally substituted alkoxy or amino, and the remaining radicals are more or less conventional,which are antibacterially active.
摘要:
The invention relates to heteroatom-containing benzocyclopentaneoxazolidinones, to processes for their preparation and their use as medicaments, especially as antibacterial medicaments.
摘要:
The invention relates to benzoxazolyl- and benzothiazolyloxazolidinones, processes for their preparation and their use as medicaments, in particular as antibacterial medicaments.
摘要:
The present invention relates to the use of substituted chromans of the general formula (I) ##STR1## in which the substituents have the meaning indicated in the description, for the production of medicaments, in particular as HIV protease-inhibiting agents, new active compounds and processes for their preparation.
摘要:
The invention relates to new phosphonopyrrolidine- and piperidine-containing pseudopeptides, to a process for their preparation and to their use as medicaments, in particular as antiviral agents in human and veterinary medicine.