摘要:
ML-236B carboxylic acid derivatives having the formula ##STR1## wherein R represents an alkyl group, a benzyl group optionally substituted with alkyl, alkoxy or halogen or a phenacyl group optionally substituted with alkyl, alkoxy or halogen; a group of 1/n M in which M represents a metal and n represents a valency of said metal; or a group of AH.sup.+ in which A represents an amino acid. These derivatives are derived from ML-236B by conventional procedures and have an antihyperlipemic activity.
摘要翻译:具有式(I)的ML-236B羧酸衍生物,其中R表示烷基,任选被烷基,烷氧基或卤素取代的苄基或任选被烷基,烷氧基或卤素取代的苯甲酰甲基; 一组1 / n M,其中M表示金属,n表示所述金属的化合价; 或一组AH +,其中A表示氨基酸。 这些衍生物通过常规方法来自ML-236B,具有抗高脂血症活性。
摘要:
3,5-Dihydroxypentanoic ester derivatives of formula (I): ##STR1## wherein: A represents an alkylene group which is optionally substituted by one or more alkyl groups, or an alkenylene group;Z represents a substituted or unsubstituted aryl or aryloxy group; andR represents a C.sub.1 -C.sub.4 alkyl group) may be prepared by reacting a dianion of an acetoacetic ester with an aldehyde of formula Z-A-CHO (wherein A and Z are as defined above) and then reducing the resulting compound. These 3,5-dihydroxypentanoic ester derivatives have antihyperlipaemic activity and are thus valuable pharmaceuticals.
摘要:
Physiologically active substances ML-236 of the formula ##SPC1##Wherein R is hydrogen atom, hydroxy group or 2-methylbutyryloxy group having cholesterol- and lipid-lowering effects in blood and liver and thus utility as hypocholesteremic and hypolipemic medicaments. They are obtained by cultivation of an ML-236-producing microorganism belonging to the genus Penicillium in a culture medium and subsequent recovery thereof from a cultured broth.
摘要:
4-Hydroxy-2-pyrone derivatives of formula (I): ##STR1## (wherein A represents an alkylene group which is optionally alkyl-substituted or an alkenylene group, and Z represents a substituted or unsubstituted aryl or aryloxy group) may be prepared by cyclizing an ester of formula (II): ##STR2## (wherein A and Z are as defined above and R represents an organic group) and have valuable antilipaemic activities.
摘要:
Physiologically active substances ML-236 of the formula ##STR1## wherein R is hydrogen atom, hydroxy group or 2-methyl-butyryloxy group having cholesterol- and lipid-lowering effects in blood and liver and thus utility as hypocholesteremic and hypolipemic medicaments. They are obtained by cultivation of an ML-236-producing micro-organism belonging to the genus Penicillium in a culture medium and subsequent recovery thereof from a cultured broth.
摘要:
Tetrahydro-M-4 and tetrahydro-IsoM-4 hydroxy carboxylic acids of the formula (I): ##STR1## wherein one of R.sup.1 and R.sup.2 represents a hydrogen atom and the other represents a hydroxy group which are useful for inhibiting chloresterol biosynthesis in the liver. The invention also provides pharmaceutical compositions containing said lactone(s).
摘要:
A compound of formula (I): ##STR1## (called 6-methoxy-IsoML-236B lactone) and its corresponding free hydroxy-carboxylic acid and salts and esters of said acid may be prepared by the enzymatic alkoxylation of an ML-236B compound, preferably using a microorganism of the genus Syncephalastrum, Absidia or Cunninghamella, e.g. Absidia coerulea, or a cell-free enzyme-containing extract from said microorganism. If desired, the lactone or carboxylic acid may be converted by conventional salification or esterification techniques to the desired salt or ester. These compounds have the ability to inhibit the biosynthesis of cholesterol and are thus of value in the treatment of hypercholesteraemia, for which purpose they may be formulated as compositions in admixture with conventional pharmaceutical carriers or diluents.
摘要:
Compounds of formula (I): ##STR1## (in which: Z represents a group of formula ##STR2## A represents a group of formula ##STR3## B represents a group of formula ##STR4## R.sup.1 represents a hydrogen atom or a methyl group; R.sup.2, R.sup.3, R.sup.4 and R.sup.6 are the same or different and each represents a hydrogen atom or an acyl group;R.sup.5 represents a carboxy group;R.sup.7 represents a hydrogen atom, an alkyl group or an acyl group;X represents a halogen atom; andthe bond represents a double bond)and salts and esters of the carboxy group represented by R.sup.5 have useful anti-hypercholesteraemic activity and may be prepared from certain natural products obtainable by cultivation of microorganisms of the genera Penicillium or Monascus.
摘要:
Compounds of formula (I): ##STR1## wherein R.sup.1 represents a group of formula ##STR2## or a group of formula ##STR3## (wherein R.sup.2 represents a C.sub.1 --C.sub.10 alkyl group) and their corresponding free hydroxy-carboxylic acids and salts and esters of said acids may be prepared by the enzymatic hydroxylation of an MB-530B compound (which may be the lactone, the carboxylic acid or a salt or ester of MB-530B or a corresponding compound in which the 2-methylbutyryloxy group at the 1-position of these compounds has been replaced by another C.sub.2 --C.sub.11 acyloxy group), preferably using a microorganism of the genus Syncephalastrum, Mucor, Rhizopus, Zygorinchus, Circinella, Actinomucor, Gongronella, Phycomyces, Streptomyces, Absidia, Cunninghamella, Mortierella, Pycnoporus or Rhizoctonia, or a cell-free enzyme-containing extract from the microorganism. If desired, the lactone or carboxylic acid may be converted by conventional salification or esterification techniques to the desired salt or ester and the salt or ester may be converted to the parent lactone or acid. These compounds have the ability to inhibit the biosynthesis of cholesterol and are thus of value in the treatment of hypercholesteraemia, for which purpose they may be formulated as compositions in admixture with conventional pharmaceutical carriers or diluents.
摘要:
Dihydro-M-4 and dihydro-IsoM-4 are new compounds which may be prepared by the catalytic hydrogenation of M-4 or IsoM-4 respectively. They, and their salts and esters (which may be prepared by conventional salification or esterification reactions with the parent dihydro-M-4 or dihydro-IsoM-4), are capable of inhibiting cholesterol biosynthesis in the liver and may be formulated, for therapeutic use, with conventional pharmaceutical carriers or diluents.