摘要:
The invention regards a process for the production of ramoplanin-like derivatives of formula (I): RAMO-NC—CO—R (I), wherein the radical R represents a hydrocarbon radical and the portion RAMO-NH— represents deacylated ramoplanin, any of its factors or ramoplanose. The compound of Formula (I) are obtained by reacting a carboxylic acid R—COOH with deacylated ramoplanin, any of its factors or ramoplanose protected on the ornitine amino groups. New compounds wherein the hydrocarbon radical R is different form those characaterizing the ramoplanin and ramoplanose natural products and their tetrahydro-derivatives are calimed. The new compounds have the same or better antinfective activity, lower haemolytic effect and better tolerability profile than ramoplanin.
摘要:
The invention regards a process for the production of ramoplanin-like derivatives of formula (I): RAMO-NC—CO—R (I), wherein the radical R represents a hydrocarbon radical and the portion RAMO-NH— represents deacylated ramoplanin, any of its factors or ramoplanose. The compound of Formula (I) are obtained by reacting a carboxylic acid R—COOH with deacylated ramoplanin, any of its factors or ramoplanose protected on the ornitine amino groups. New compounds wherein the hydrocarbon radical R is different form those characaterizing the ramoplanin and ramoplanose natural products and their tetrahydro-derivatives are calimed. The new compounds have the same or better antinfective activity, lower haemolytic effect and better tolerability profile than ramoplanin.
摘要:
Novel ramoplanin derivatives are disclosed. These ramoplanin derivatives exhibit antibacterial activity. As the compounds of the subject invention exhibit potent activities against gram positive bacteria, they are useful antimicrobial agents. Methods of synthesis and of use of the compounds are also disclosed.
摘要:
The present invention relates to a pharmaceutical composition for intravenous administration that contains ramoplanin or a member of the ramoplanin family.
摘要:
The present invention is directed to novel antibiotic A 40926 derivatives characterized by having a carboxy, (C.sub.1 -C.sub.4) alkoxy-carbonyl, aminocarbonyl, (C.sub.1 -C.sub.4) alkylaminocarbonyl, di (C.sub.4 -C.sub.4)alkylaminocarbonyl or hydroxymethyl substituent on the N-acylaminoglucuronyl moiety and a hydroxy or a polyamine substituent in position 63 of the molecule. The compounds of the invention show high in vitro activity against glycopeptide resistant Enterococci and Staphylococci.
摘要:
The present invention refers to basic oxazoline-amide derivatives of GE 2270 and GE 2270-like antibiotics of general formula (I), wherein the group GE represents the antibiotic core molecule. The amide derivatives of antibiotic GE 2270 of formula (I) are antimicrobial agents mainly active against gram positive bacteria. ##STR1##
摘要:
This invention relates to 1-[(2-acylthiocycloalkyl)carbonyl]-L-proline derivatives which are useful as antihypertensive agents and to a process for their preparation.
摘要:
The present invention is directed to a process for producing 2-amino-2-arylacetonitriles of general formula I: ##STR1## wherein R and R.sup.1 independently represent hydrogen, hydroxy, hydroxy(C.sub.1 -C.sub.4)alkyl, (C.sub.1 -C.sub.4)alkoxy, (C.sub.1 -C.sub.6)alkyl, 2-furyl, 2-thienyl, 4-pyridinyl, 1-pyrrolydinyl, 1-piperidinyl, 4-morpholinyl, 1-piperazinyl, 4-methyl-1-piperazinyl, 4-phenylpiperazinyl, or phenyl which can optionally be substituted with from 1 to 3 substituents independently selected from (C.sub.1 -C.sub.4)alkyl and (C.sub.1 -C.sub.4)alkoxy, or R and R.sup.1 independently represent a phenyl(C.sub.1 -C.sub.4)alkyl or a phenyl(C.sub.1 -C.sub.4)alkoxy group wherein the phenyl group can be either unsubstituted or substituted as above.An arylaldehyde derivative of formula II ##STR2## is reacted with chloroform in base and in the presence of ammonia to give the 2-amino-2-arylacetonitrile derivative.
摘要:
The present invention refers to basic amides derivatives of GE 2270 and GE 2270-like antibiotics of general formula (1), wherein the group GE represents the antibiotic core molecule. The amide derivatives of antibiotic GE 2270 of formula (I) are antimicrobial agents mainly active against gram positive bacteria. ##STR1##
摘要:
Tetrapeptides of general formula (I) deriving from dalbaheptide antibiotics ##STR1## wherein: W and Z represent the relative portions of the aglycon of an antibiotic of the dalbaheptide group (aglucodalbaheptides); Y represents a carboxylic group or a functional derivative of said carboxylic group; R and R.sub.0 each independently represent amino or a protected amino group; R.sub.1 represents hydrogen or a protecting group of the carboxylic function; and its salts with acids and bases as well as its inner salts. A process for producing the tetrapeptides of formula (I) from the corresponding dalbaheptides and aglucodalbaheptides.