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M9610328.TXT
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1996-01-30
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Document 0328
DOCN M9610328
TI Synthesis and antiviral activity of 8-aza analogs of chiral
[2-(phosphonomethoxy) propyl]guanines.
DT 9601
AU Franchetti P; Sheikha GA; Cappellacci L; Grifantini M; De Montis A;
Piras G; Loi AG; La Colla P; Dipartimento di Scienze Chimiche,
Universita di Camerino, Italy.
SO J Med Chem. 1995 Sep 29;38(20):4007-13. Unique Identifier : AIDSLINE
MED/96005099
AB (R)- And (S)-8-aza-9(-)[2-(phosphonomethoxy)propyl]guanine [(R)-and
(S)-8-aza-PMPG] were synthesized and tested in vitro for anti-human
immunodeficiency virus (HIV) activity. The synthesis of the above
compounds and of (R)-9(-)[2-(phosphonomethoxy)propyl]guanine [(R)-PMPG]
was carried out through the alkylation of 8-azaguanine or guanine with
(R)- and (S)-2-O(-)[(diisopropylphosphono)methyl]-1-O-(tolylsulfonyl)
1,2-propanediol followed by deprotection of the phosphonic moiety. A
different, even more convenient synthesis of (R)-8-aza-PMPG starting
from 2-amino-6-chloro-5-nitro-4(3H)-pyrimidinone and
(R)(-)[2(-)[(diisopropylphosphono)-methoxy]propyl]amine is also
reported. Both (R)-8-aza-PMPG and (R)-PMPG demonstrated anti-HIV
activity in the MTT assay with EC50 values of 12 and 4.5 microM,
respectively. The corresponding S enantiomers were found to be less
potent. When evaluated in combination with AZT, ddI, or DABO 603,
(R)-8-aza-PMPG gave additive, additive, and synergistic anti-HIV-1
effects, respectively.
DE Antiviral Agents/*CHEMICAL SYNTHESIS/PHARMACOLOGY Aza
Compounds/*CHEMICAL SYNTHESIS/PHARMACOLOGY Cell Line Guanine/*CHEMICAL
SYNTHESIS/PHARMACOLOGY Human HIV/*DRUG EFFECTS Stereoisomers
Support, Non-U.S. Gov't JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).