METABOLISM OF DEUTERATED ANALOGS OF CHLORAMBUCIL BY THE RAT

被引:13
作者
FARMER, PB
FOSTER, AB
JARMAN, M
NEWELL, DR
ODDY, MR
KIBURIS, JH
机构
[1] ROYAL CANC HOSP,CHESTER BEATTY RES INST,INST CANC RES,LONDON SW3 6JB,ENGLAND
[2] UNIV ATHENS,SCH MED,DEPT BIOL CHEM,ATHENS,GREECE
基金
英国医学研究理事会;
关键词
D O I
10.1016/0009-2797(79)90162-5
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The antitumour agent chlorambucil {4[4-bis(2-chloroethyl)aminophenyl]butyric acid} is converted by β-oxidation in vivo into phenylacetic mustard {2[4-bis(2-chloroethyl)aminophenyl]acetic acid}. This process may be disadvantageous from a therapeutic viewpoint since the metabolite has half the therapeutic index of the parent drug against the Walker 256 carcinoma in rats. In seeking to retard β-oxidation, selectively deuterated analogues have been synthesised and administered to rats. Plasma levels of phenylacetic mustard after giving chlorambucil-β-d2 were lower than those given by unlabelled drug, but the therapeutic activity was not significantly altered by deuteration. A dehydro derivative of chlorambucil was detected as an intermediate in the β-oxidation pathway. The isotopic compositions of this metabolite, and of recovered chlorambucil, were measured in plasma samples taken after giving labelled chlorambucil (α-d2 and β-d2 variants) to rats. Deuterium was almost totally lost from the α-d2 form and from its metabolite after 30 min and partially lost in 10 min. The β-d2 variant and its dehydro-derivative retained the label. Possible mechanisms for deuteration loss are discussed. The design of novel analogues, based on these metabolic studies, is proposed. © 1979.
引用
收藏
页码:211 / 224
页数:14
相关论文
共 19 条
[1]   EXCHANGE REACTIONS OF CARBOXYLIC ACID SALTS . A FACILE PREPARATION OF ALPHA-DEUTERIOCARBOXYLIC ACIDS [J].
ATKINSON, JG ;
CSAKVARY, JJ ;
HERBERT, GT ;
STUART, RS .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1968, 90 (02) :498-&
[2]   DEUTERIUM-ISOTOPE EFFECTS ON INITIAL RATES OF LIVER ALCOHOL-DEHYDROGENASE REACTION [J].
BUSH, K ;
SHINER, VJ ;
MAHLER, HR .
BIOCHEMISTRY, 1973, 12 (23) :4802-4805
[3]  
BUUHOI NP, 1958, 2ND P UN C PEAC US A, V25, P223
[4]  
COX PJ, 1976, CANCER TREAT REP, V60, P483
[6]   ARYL-2-HALOGENOALKYLAMINES .12. SOME CARBOXYLIC DERIVATIVES OF NN-DI-2-CHLOROETHYLANILINE [J].
EVERETT, JL ;
ROBERTS, JJ ;
ROSS, WCJ .
JOURNAL OF THE CHEMICAL SOCIETY, 1953, (AUG) :2386-2392
[7]   SYNTHESIS, METABOLISM, AND ANTI-TUMOR ACTIVITY OF DEUTERATED ANALOGS OF 1-(2-CHLOROETHYL)-3-CYCLOHEXYL-1-NITROSOUREA [J].
FARMER, PB ;
FOSTER, AB ;
JARMAN, M ;
ODDY, MR .
JOURNAL OF MEDICINAL CHEMISTRY, 1978, 21 (06) :514-520
[8]   ISOTOPE-EFFECTS IN O-DEMETHYLATIONS MEDIATED BY RAT-LIVER MICROSOMES - APPLICATION OF DIRECT INSERTION ELECTRON-IMPACT MASS-SPECTROMETRY [J].
FOSTER, AB ;
JARMAN, M ;
STEVENS, JD ;
THOMAS, P ;
WESTWOOD, JH .
CHEMICO-BIOLOGICAL INTERACTIONS, 1974, 9 (05) :327-340
[9]   ARSENOSO DERIVATIVES OF PHENYL-SUBSTITUTED FATTY ACIDS [J].
FREEDMAN, LD ;
DOAK, GO .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1949, 71 (03) :779-780
[10]   SELECTIVITY OF ACTION OF ALKYLATING AGENTS AND DRUG RESISTANCE .2. A COMPARISON OF EFFECTS OF ALKYLATING DRUGS ON GROWTH INHIBITON AND CELL SIZE IN SENSITIVE AND RESISTANT STRAINS OF YOSHIDA ASCITES SARCOMA [J].
HARRAP, KR ;
HILL, BT .
BRITISH JOURNAL OF CANCER, 1969, 23 (01) :227-&