摘要:
An optical isomer having an optical rotation degree of (+) from among (.+-.)-.alpha.-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylic acid-3-(1-benzyl-3-piperidyl) ester-5-methyl ester, the hydrochloride of which has melting points ranging from 196.degree. to 202.degree. C.; or a salt thereof is described as being suitable for use in a pharmaceutical composition having hypotensive activity.
摘要:
Mitomycin derivatives having potent antitumor activity having the formula: ##STR1## wherein A is ON--or R.sub.4 N.dbd.N--[wherein R.sub.4 is selected from ##STR2## and optionally substituted heterocyclic groups (wherein R.sub.5 and R.sub.8 are each independently selected from hydrogen, lower alkyl and lower cycloalkyl; R.sub.6 is selected from hydrogen, halogen, hydroxy, lower alkoxy, amino and nitro; R.sub.7 is selected from lower alkyl and lower cycloalkyl; and X is selected from oxygen, sulphur and imino)];R.sub.1 and R.sub.2 are each independently selected from hydrogen, lower alkyl, lower cycloalkyl, optionally substituted aralkyl, optionally substituted alkanoyl, optionally substituted arylcarbonyl, optionally substituted alkanesulfonyl, arylsulfonyl and aralkylsulfonyl;R.sub.3 is hydrogen or carbamoyl;Y is hydrogen or methyl;Z is selected from hydrogen, methyl and acetyl;and is an .alpha. or .beta. bond.
摘要翻译:丝裂霉素衍生物具有有效的抗肿瘤活性,具有下式:其中A为ON-或R 4 N = N- [其中R 4为选自下列任意取代的杂环基团(其中R5和R8 各自独立地选自氢,低级烷基和低级环烷基; R6选自氢,卤素,羟基,低级烷氧基,氨基和硝基; R7选自低级烷基和低级环烷基; X选自氧,硫和亚氨基 )]; R 1和R 2各自独立地选自氢,低级烷基,低级环烷基,任选取代的芳烷基,任选取代的烷酰基,任选取代的芳基羰基,任选取代的烷基磺酰基,芳基磺酰基和芳烷基磺酰基; R3是氢或氨基甲酰基; Y是氢或甲基; Z选自氢,甲基和乙酰基; 并且是α或β键。
摘要:
A storage stable dessicated composition is formed of a DX-52-1 derivative according to Formula (I) ##STR1## and at least one saccharide. The composition may be formed by lyophilizing a composition which preferably has a pH of 7-12.
摘要:
Mitomycin derivatives having potent antitumour activity have the formula: ##STR1## wherein R represents lower alkyl, cycloalkyl or unsubstituted or substituted aralkyl;X represents hydrogen or carbamoyl;Y and Z each independently represents hydrogen or methyl;and represents an .alpha. or .beta. bond.
摘要:
Stabilized duocarmycin derivatives represented by formula (I): ##STR1## wherein R is lower alkyl, allyl or benzyl, and X is Cl or Br, are prepared by adding at least a compound selected from the group consisting of a saccharide, an electrolyte, a water-soluble polymer, a polyhydric alcohol and a surfactant to a solution containing the duocarmycin derivatives. Also provided are freeze-dried pharmaceutical preparations containing the stabilized duocarmycin derivatives.
摘要:
A motilin preparation in the form of a rectal suppository containing motilin together with a pH controller capable of adjusting the pH value of the intrarectal fluid to 8.0 to 10.0, which is highly useful as a rectal suppository.