Optically active antifungal azoles: synthesis and antifungal activity of (2R,3S)-2-(2,4-difluorophenyl)-3-(5-{2-[4-aryl-piperazin-1-yl]-ethyl}-tetrazol-2-yl/1-yl)-1-[1,2,4]-triazol-1-yl-butan-2-ol
摘要:
A series of (2 R, 3S)-2-(2,4-difluorophenyl)-3-(5-{2-[4-aryl-piperazin-1-yl]-ethyl}-tetrazo-2-yl)-1-[1,2,4]-triazol-1-yl-butan-2-ol (11a-n) and (2R,3S)-2-(2,4-difluorophenyl)-3-(5-{2-[4-aryl-piperazin-1-yi]-ethyl}-tetrazole-1-yl)-1-[1,2,4]-triazol-1-yl-butan-2-ol (12a-n) has been synthesized. The antifungal activity of compounds was evaluated by in vitro agar diffusion and broth dilution assay. Compounds 11d and its positional isomer 12d having 3-trifluoromethyl substitution on the phenyl ring of piperazine demonstrated significant antifungal activity against variety of fungal cultures (Candida spp. C. neoformans and Aspergillus spp.). The compound 12d showed MIC value of 0.12mug/mL for C. albicans, C albicans V-01-191A-261 (resistant strain); 0.25mug/mL for C tropicalis, C parapsilosis ATCC 22019 and C krusei and MIC value of 0.5 mug/mL for C glabrata, C krusei ATCC 6258, which is comparable to itraconazole and better than fluconazole. Further, compound 11d showed significant activity (MIC; 0.25-0.5 mug/mL) against Candida spp. and strong anticryptococcal activity (MIC; 0.25 mug/mL) against C neoformans. (C) 2004 Elsevier Ltd. All rights reserved.
Triethylammonium acetate (TEAA): a recyclable inexpensive ionic liquid promotes the chemoselective aza- and thia-Michael reactions
作者:Akhilesh K. Verma、Pankaj Attri、Varun Chopra、Rakesh K. Tiwari、Ramesh Chandra
DOI:10.1007/s00706-008-0886-4
日期:2008.9
A new, highlyefficient, inexpensive, recyclable, mild, convenient, and green protocol for chemoselective aza/thia- Michaeladdition reactions of amines/thiols to α,β - unsaturated compounds using triethylammonium acetate ( TEAA ) ionic liquid was developed. The catalyst can be recycled ten times and obviate the need for toxic and expensive catalysts.
The present invention relates to compounds of formula (I) or pharmaceutical acceptable salts,
wherein X, Y, Z, R
3
and R
4
are defined in the description. The present invention relates also to compositions containing said compounds which are useful for inhibiting kinases such as wee-1 and methods of treating diseases such as cancer.
The invention relates to compounds of a general formula (I):
wherein Ar
1
is an optionally-substituted aryl or heteroaromatic group; R
1
is an optionally-substituted lower alkyl, lower alkenyl, lower alkynyl or cyclo-lower alkyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R
2
is a hydrogen atom, a lower alkyl group, a lower alkenyl group or a lower alkynyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R
3
is a hydrogen atom or a lower alkyl group; R
4
is a hydrogen atom, a halogen atom, a hydroxyl group, a lower alkyl group or a group of —N(R
1k
)R
1m
; T and U are a nitrogen atom or a methine group, etc.
The compounds of the invention have excellent Weel kinase-inhibitory effect and are therefore useful in the field of medicines, especially treatment of various cancers.
The invention relates to compounds of a general formula (I):
wherein Ar
1
is an optionally-substituted aryl or heteroaromatic group; R
1
is an optionally-substituted lower alkyl, lower alkenyl, lower alkynyl or cyclo-lower alkyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R
2
is a hydrogen atom, a lower alkyl group, a lower alkenyl group or a lower alkynyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R
3
is a hydrogen atom or a lower alkyl group; R
4
is a hydrogen atom, a halogen atom, a hydroxyl group, a lower alkyl group or a group of —N(R
1k
)R
1m
; T and U are a nitrogen atom or a methine group, etc.
The compounds of the invention have excellent Weel kinase-inhibitory effect and are therefore useful in the field of medicines, especially treatment of various cancers.
The invention relates to compounds of a general formula (I):
wherein Ar
1
is an optionally-substituted aryl or heteroaromatic group; R
1
is an optionally-substituted lower alkyl, lower alkenyl, lower alkynyl or cyclo-lower alkyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R
2
is a hydrogen atom, a lower alkyl group, a lower alkenyl group or a lower alkynyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R
3
is a hydrogen atom or a lower alkyl group; R
4
is a hydrogen atom, a halogen atom, a hydroxyl group, a lower alkyl group or a group of —N(R
1k
)R
1m
; T and U are a nitrogen atom or a methine group, etc.
The compounds of the invention have excellent Weel kinase-inhibitory effect and are therefore useful in the field of medicines, especially treatment of various cancers.