摘要:
Disclosed are 6-(1-hydroxyethyl)-2-carbamimidoyl-pen-2-em-3-carboxylic acids (I) having the representative structure: ##STR1## wherein: A is a direct, single bond connecting the indicated S and C atoms, or A is a cyclic or acyclic connecting group selected, inter alia, from alkyl, cycloalkyl, aryl, heteroaryl, heteroalkyl; R.sup.1 and R.sup.2, which define the carbamimidoyl function, are, inter alia, independently selected from hydrogen, alkyl, aryl, alkoxy, amino; additionally, said carbamimidoyl is characterized by cyclic structures achieved by the joinder of the two nitrogen atoms via their substituents and by their joinder to connecting group A; additionally, "carbamimidiums" are disclosed by quaternization of one of the nitrogen atoms of said carbamimidoyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are 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:
Disclosed are 6-substituted-2-carbamimidoyl-pen-2-em-3-carboxylic acids (I) having the representative structure: ##STR1## wherein R.sup.6, and R.sup.7 are, inter alia, independently selected from the group consisting of hydrogen, alkyl, alkoxyl, halo, OH, COOH, alkenyl, aryl and aralkyl; A is a direct, single bond connecting the indicated S and C atoms, or A is a cyclic or acyclic connecting group selected, inter alia, from alkyl, cycloalkyl, aryl, heteroaryl, heteroalkyl; R.sup.1 and R.sup.2, which define the carbamimidoyl function, are, inter alia, independently selected from hydrogen, alkyl, aryl; additionally, said carbamimidoyl is characterized by cyclic structures achieved by the joinder of the two nitrogen atoms via their substituents and by their joinder to connecting group A; additionally, "carbamimidiums" are disclosed by quarternization of one of the nitrogen atoms of said carbamimidoyl. Such compounds as well as their pharmaceutically acceptable salt, ester and amide derivatives are useful as antibiotics. Also disclosed are 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:
Disclosed are 6- and 6,6-disubstituted-2-substituted thio-pen-2-em-3-carboxylic acids of the following structure: ##STR1## wherein: R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently selected from: hydrogen; substituted and unsubstituted: alkyl, cycloalkyl, halo, alkoxyl, alkenyl, aralkyl, aryl, heterocyclyl, heteroaryl, and heterocyclylalkyl; W is an electron withdrawing group, and, for example, is selected from: --COR.sup.5, --CN, SO.sub.2 C.sub.6 H.sub.5 ; R.sup.5 is hydrogen; substituted and unsubstituted: alkyl, aryl, aralkyl, heteroaryl, heterocyclyl, or heterocyclylalkyl; or R.sup.5 may be --OR.sup.6, --NR.sup.7 R.sup.8, and --SR.sup.9 ; wherein R.sup.6 is H; substituted and unsubstituted: alkyl, alkenyl, or a group which defines --CO.sub.2 R.sup.6 as a pharmaceutically acceptable ester wherein R.sup.6 is, for example, phthalidyl, or 5-methyl-2-oxo-1,3-dioxolen-4-ylmethyl; R.sup.7 and R.sup.8 are independently selected from: hydrogen; substituted and unsubstituted: alkyl, aralkyl, aryl, heterocyclyl, and heterocyclylalkyl; R.sup.9 is substituted and unsubstituted: alkyl, aralkyl, aryl, heterocyclyl, and heterocyclyclalkyl; R.sup.3 may also be W; n is 0 or 1; when the unsaturated moiety attached to the exocyclic sulfur atom is acetylenic, then R.sup.3 and R.sup.4 are nonexistent and W is as previously defined. Such compounds I are new and they and their pharmaceutically acceptable salt and ester derivatives are useful as antibiotics.
摘要翻译:公开了具有以下结构的6-和6,6-二取代-2-取代的硫代 - 笔 - 2-em-3-羧酸:其中:R1,R2,R3和R4独立地选自: 氢; 烷基,环烷基,卤素,烷氧基,烯基,芳烷基,芳基,杂环基,杂芳基和杂环基烷基; W是吸电子基团,例如,选自:-COR 5,-CN,SO 2 C 6 H 5; R5是氢; 取代和未取代的:烷基,芳基,芳烷基,杂芳基,杂环基或杂环基烷基; 或者R 5可以是-OR 6,-NR 7 R 8和-SR 9; 其中R6是H; 取代和未取代的:烷基,烯基或定义-CO 2 R 6作为药学上可接受的酯的基团,其中R 6是例如酞基或5-甲基-2-氧代-1,3-二氧杂环戊烯-4-基甲基; R7和R8独立地选自:氢; 取代和未取代的:烷基,芳烷基,芳基,杂环基和杂环基烷基; R9是取代和未取代的:烷基,芳烷基,芳基,杂环基和杂环烷基; R3也可以是W; n为0或1; 当连接到环外硫原子上的不饱和部分是炔属时,则R3和R4不存在,W如前所定义。 这些化合物I是新的,它们及其药学上可接受的盐和酯衍生物可用作抗生素。
摘要:
Disclosed is a synthesis for preparing substituted 2-thioxopenams which are useful in the synthesis of penem antibiotics 7 which may be conducted in an enantiospecific manner; said process proceeds from azetidinone 1 via the azetidinone acetic ester 2, the 4-metallothiozetidinone 3, and the 4-dithiocarbonylazetidinone 4 to the substituted 2-thioxopenam 5: ##STR1## wherein: R.sup.6 and R.sup.7 are independently selected from: hydrogen; R.sup.6 NH-- (R.sup.6 is acyl or H); substituted and unsubstituted: alkyl, alkenyl, alkynyl, aryl, heterocyclyl, heteroaryl, cycloalkyl, and cycloalkenyl; wherein said substituents are, inter alia: halo (chloro, bromo, fluoro, iodo), hydroxyl, cyano, carboxyl, amino, and the above-recited values for R.sup.6 and R.sup.7 ; in functional terms,R.sup.2 is a group which potentially forms a stable carbonium ion, for example: trityl (--C(C.sub.6 H.sub.5).sub.3),bis(p-methoxyphenyl)methyl, ##STR2## --2,4-dimethoxybenzyl, ##STR3## 2-(diphenyl)isopropyl, ##STR4## and the like; M is a thiophilic metal such as silver, thallium, mercury, or the like;and R.sup.1 is a protecting group such as allyl, p-nitrobenzyl or a biologically removable group (pharmaceutically acceptable ester moiety), for example: pivaloyloxymethyl, pivoloyloxyethyl, ethoxycarbonyloxymethyl, phthalidyl (5-methyl-2-oxo-1,3-dioxolen-4-yl)-; and X is a methyl leaving group such as phenoxy, p-chlorophenoxy, p-nitrophenoxy, phenylthio, alkylthio, alkoxy, chloro, or the like.R.sup.8 is inter alia, substituted and unsubstituted alkyl; the final penem products 7 are known, and their various embodiments are included by this definition.
摘要:
Disclosed are 6-amido-2-S-oxides of substituted 2-organothio-pen-2-em-3-carboxylic acids (I) which are useful as antibiotics and as intermediates in the synthesis of substituted pen-2-em-3-carboxylic acids: ##STR1## wherein: R.sup.1 is H or acyl; R.sup.2 is hydrogen or methoxyl; R.sup.3 is alkyl having from 1-6 carbon atoms; phenylalkyl having 7-12 carbon atoms; and cycloalkyl having 3-6 carbon atoms; and R.sup.4 is hydrogen, a removable protecting group or a pharmaceutically acceptable salt or ester moiety.
摘要:
Disclosed are O-, N- and substituted carboxyl derivatives of the antibiotic thienamycin, which has the following structure: ##STR1## Such derivatives are useful as antibiotics. Also disclosed are processes for the preparation of such derivatives, pharmaceutical compositions comprising such derivatives, and methods of treatment comprising administering such derivatives and compositions when an antibiotic effect is indicated.
摘要:
Disclosed are 2-aza-substituted 1-carbadethiapen-2-em-3-carboxylic acids. I, where the generic 2-aza group includes azido, acylamino, amino, alkylamino, dialkylamino, triazolyl, triazolinyl, aziridinyl, and their pharmaceutically acceptable salt, ester, anhydride and amide derivatives which are useful as antibiotics. Also disclosed are processes for the preparation of I from the known, appropriately substituted bicyclic keto ester II via the 2-azido central intermediate III: ##STR1## wherein R.sup.16 is H or CH.sub.3, preferably beta-methyl; R.sup.6, and R.sup.7 are independently hydrogen, linear, branched or cyclic C.sub.1 -C.sub.5 alkyl, which can be substituted with fluoro, hydroxy, protected hydroxy, sulfoxy, amino, protected amino, wherein R.sup.6 and R.sup.7 taken together can also be C.sub.2 -C.sub.4 alkylidene, similarly substituted; with the proviso that both R.sup.6 and R.sup.7 are not unsubstituted alkyl, R.sup.1 and R.sup.2 are, inter alia, hydrogen, alkyl, acyl, and can be joined to form a ring comprising 3 to 7 atoms; R.sup.a is hydrogen, a salt cation, a removable protecting group, or a pharmaceutically acceptable ester moiety.Also disclosed are 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:
Disclosed are 2-aza-substituted 1-carbadethiapen-2-em-3-carboxylic acids I, where the generic 2-aza group includes azido, acylamino, amino, alkylamino, dialkylamino, triazolyl, triazolinyl, aziridinyl, and their pharmaceutically acceptable salt, ester, anhydride and amide derivatives which are useful as antibiotics. Also disclosed are processes for the preparation of I from the known, appropriately substituted bicyclic keto ester II via the 2-azido central intermediate III: ##STR1## wherein R.sup.16 is H or CH.sub.3, preferably beta-methyl; R.sup.6, and R.sup.7 are independently hydrogen, linear, branched or cyclic C.sub.1 -C.sub.5 alkyl, which can be substituted with fluoro, hydroxy, protected hydroxy, sulfoxy, amino, protected amino, wherein R.sup.6 and R.sup.7 taken together can also be C.sub.2 -C.sub.4 alkylidene, similarly substituted; with the proviso that both R.sup.6 and R.sup.7 are not unsubstituted alkyl, R.sup.1 and R.sup.2 are, inter alia, hydrogen, alkyl, acyl, and can be joined to form a ring comprising 3 to 7 atoms; R.sup.a is hydrogen, a salt cation, a removable protecting group, or a pharmaceutically acceptable ester moiety.Also disclosed are 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:
Carbapenems having the formula: ##STR1## wherein ##STR2## is mono- or bicyclic quaternary heteroaryl, their preparation and antibiotic use are disclosed.