Method of treating cancerous and precancerous conditions
申请人:Eisai Co., Ltd.
公开号:US04835183A1
公开(公告)日:1989-05-30
An anti-cancer agent which comprises a polyprenvl compound having the formula (I): ##STR1## in which each of n and m is 0, 1 or 2, n+m is 0, 1 or 2, A is ##STR2## and B is ##STR3## in which R represents the hydroxyl group, a lower alkoxy group, or ##STR4## (wherein each of R.sub.1 and R.sub.2 is the hydrogen atom, a lower alkyl group or an aryl group)]; provided that R is a lower alkoxy or ##STR5## if n is 1, m is 0, A is ##STR6## and B is ##STR7##
Conjugated polyprenylcarboxylic acids and their derivatives
申请人:Eisai Co., Ltd.
公开号:US04655973A1
公开(公告)日:1987-04-07
A conjugated polyprenylcarboxylic acid and its derivative having the formula: ##STR1## in which each of n and m is 0, 1 or 2, n+m is 1 or 2, A is ##STR2## and R is the hydroxyl group, a lower alkoxy group or ##STR3## wherein each of R.sub.1 and R.sub.2 represents the hydrogen atom, a lower alkyl group, or an aryl group; provided that R is ##STR4## if A is ##STR5## n is 1 and m is 0.
A process for the preparation of ketones corresponding to the general Formula I
1
in which &bgr;,&ggr;,&dgr;-allenic, di-unsaturated ketones and/or &agr;,&bgr;,&ggr;,&dgr;-conjugated, di-unsaturated ketones, obtained by reaction of propargyl alcohols with enol ethers and are converted in direct manner by hydrogenation to the saturated ketones corresponding to the general Formula I without purification by distillation.
[EN] ISOMERIZATION OF ß-KETO-ALLENES<br/>[FR] ISOMÉRISATION DE ?-CÉTO-ALLÈNES
申请人:DSM IP ASSETS BV
公开号:WO2011131607A1
公开(公告)日:2011-10-27
Isomerization of β-keto-allenes of the general formula I wherein R1 is hydrogen, methyl or ethyl, in particular hydrogen or methyl; R2 is hydrogen or methyl; R3 is hydrogen or methyl, in particular methyl and R4 is an aliphatic hydrocarbon residue containing 1 - 37 carbon atoms, into corresponding α,γ-dienones of formula II by treatment with a basic ion exchange resin.
Conjugated polyprenylcarboxylic acids and their derivatives as well as pharmaceutical preparations containing these compounds
申请人:Eisai Co., Ltd.
公开号:EP0054732A1
公开(公告)日:1982-06-30
A conjugated polyprenylcarboxylic acid and its derivative having the formula:
in which each of n and m is 0, 1 or 2, n+m is 1 or 2, A is
and R is a hydroxyl group, a lower alkoxy group or
wherein each of R, and R2 represents a hydrogen atom, a lower alkyl group, or an aryl group; provided that R is
n is 1 and m is 0.
There are also descrived pharmaceutical preparations containing above compounds.
一种共轭多戊烯基羧酸及其衍生物,其式为:其中 n 和 m 各为 0、1 或 2,n+m 为 1 或 2,A 为,R 为羟基、低级烷氧基或其中 R 和 R2 各代表氢原子、低级烷基或芳基;条件是 R 的 n 为 1,m 为 0。 此外,还介绍了含有上述化合物的药物制剂。