Abstract
The reactions of ethyl (4,5-dihydrofuran-3-yl)-2-oxoacetate
and ethyl 2-(3,4-dihydro-2H -pyran-6-yl)-2-oxoacetate,
as 1,3-bielectrophiles, with N-unsubstituted 5-aminoazoles, as N-C-N-binucleophiles,
are the subject of this work. Regioselective heterocyclizations
of ethyl 2-(3,4-dihydro-2H -pyran-6-yl)-2-oxoacetate lead
to 3-hydroxypropyl-7-ethoxycarbonyl substituted pyrazolo[1,5-a ]pyrimidines and triazolo[1,5-a ]pyrimidines whilst the corresponding
reactions of ethyl (4,5-dihydrofuran-3-yl)-2-oxoacetate result in
the formation of oxodihydropyrano[4,3-e ] annulated
products.
Key words
lactones - aminoazoles - heterocyclization - pyrazolo[1,5-a ]pyrimidines - triazolo[1,5-a ]pyrimidines
References
<A NAME="RT113911SS-1A">1a </A>
Effenberger F.
Maier R.
Schoenwaelder K.-H.
Ziegler T.
Chem
Ber.
1982,
115:
2766
<A NAME="RT113911SS-1B">1b </A>
Stetter H.
Lorenz G.
Chem. Ber.
1985,
118:
1115
<A NAME="RT113911SS-1C">1c </A>
Hojo M.
Masuda R.
Sakaguchi S.
Takagawa M.
Synthesis
1986,
1016
For some examples, see:
<A NAME="RT113911SS-2A">2a </A>
Zhu S.
Xu G.
Qin C.
Chu Q.
Xu Y.
Monatsh. Chem.
1999,
130:
671
<A NAME="RT113911SS-2B">2b </A>
Mellor JM.
Reid G.
El-Sagheer AH.
El-Tamany E.-SH.
Tetrahedron
2000,
56:
10039
<A NAME="RT113911SS-2C">2c </A>
Chu Q.
Song L.
Jin G.
Zhu S.
J. Fluorine Chem.
2001,
108:
51
<A NAME="RT113911SS-2D">2d </A>
Zanatta N.
Barichello R.
Pauletto MM.
Bonacorso HG.
Martins MAP.
Tetrahedron Lett.
2003,
44:
961
<A NAME="RT113911SS-2E">2e </A>
Zhu S.
Jin G.
Jiang H.
Can.
J. Chem.
2005,
83:
2127
<A NAME="RT113911SS-2F">2f </A>
Tarasenko KV.
Gerus II.
Kukhar VP.
J. Fluorine Chem.
2007,
128:
1264
<A NAME="RT113911SS-2G">2g </A>
Mamat C.
Pundt T.
Dang THT.
Klassen R.
Reinke H.
Koeckerling M.
Langer P.
Eur.
J. Org. Chem.
2008,
492
<A NAME="RT113911SS-2H">2h </A>
Zanatta N.
Wouters AD.
Fantinel L.
Da Silva FM.
Barichello R.
Bonacorso HG.
Martins MAP.
Da Silva PEA.
Ramos DF.
Synlett
2009,
755
<A NAME="RT113911SS-3A">3a </A>
Colla A.
Martins MAP.
Clar G.
Krimmer S.
Fischer P.
Synthesis
1991,
483
<A NAME="RT113911SS-3B">3b </A>
Jones BG.
Branch SK.
Thompson AS.
Threadgill MD.
J.
Chem. Soc., Perkin Trans. 1
1996,
2685
<A NAME="RT113911SS-3C">3c </A>
Zhu S.
Qin C.
Xu G.
Chu Q.
Huang Q.
J. Fluorine
Chem.
1999,
9:
141
<A NAME="RT113911SS-3D">3d </A>
Song L.-P.
Chu Q.-L.
Zhu S.-Z.
J.
Fluorine Chem.
2001,
107:
107
<A NAME="RT113911SS-3E">3e </A>
Zanatta N.
Cortelini M de FM.
Carpes MJS.
Bonacorso HG.
Martins MAP.
J. Heterocycl.
Chem.
1997,
34:
509
<A NAME="RT113911SS-3F">3f </A>
Zanatta N.
Fagundes MB.
Ellensohn R.
Marques M.
Bonacorso HG.
Martins MAP.
J. Heterocycl.
Chem.
1998,
35:
451
<A NAME="RT113911SS-3G">3g </A>
Zanatta N.
Lopes ECS.
Fantinel L.
Bonacorso HG.
Martins MAP.
J. Heterocycl. Chem.
2002,
39:
943
<A NAME="RT113911SS-3H">3h </A>
Zanatta N.
Rosa LS.
Cortelini MFM.
Beux S.
Santos APD.
Bonacorso HG.
Martins MAP.
Synthesis
2002,
2404
<A NAME="RT113911SS-3I">3i </A>
Zanatta N.
Amaral SS.
Esteves-Souza A.
Echevarria A.
Brondani PB.
Flores DC.
Bonacorso HG.
Flores AFC.
Martins MAP.
Synthesis
2006,
2305
<A NAME="RT113911SS-3J">3j </A>
Zanatta N.
Silva FM.
Rosa LS.
Jank L.
Bonacorso HG.
Martins MAP.
Tetrahedron
Lett.
2007,
48:
6531
<A NAME="RT113911SS-3K">3k </A>
Zanatta N.
Madruga CC.
Marisco PC.
Da Rosa LS.
Fernandes L. da S.
Flores DC.
Flores AFC.
Burrow RA.
Bonacorso HG.
Martins MAP.
J.
Heterocycl. Chem.
2008,
45:
221
<A NAME="RT113911SS-3L">3l </A>
Zanatta N.
Fantinel L.
Lourega RV.
Bonacorso HG.
Martins MAP.
Synthesis
2008,
358
<A NAME="RT113911SS-3M">3m </A>
Bonacorso HG.
Porte LMF.
Paim GR.
Luz FM.
Martins MAP.
Zanatta N.
Tetrahedron Lett.
2010,
51:
3759
<A NAME="RT113911SS-4A">4a </A>
Gaulon C.
Gizecki P.
Dhal R.
Dujardin G.
Synlett
2002,
952
<A NAME="RT113911SS-4B">4b </A>
Vu NQ.
Gree D.
Gree R.
Brown E.
Dujardin G.
Tetrahedron
Lett.
2003,
44:
6425
<A NAME="RT113911SS-5A">5a </A>
Chen C.
Wilcoxen KM.
Huang CQ.
Xie Y.-F.
McCarthy JR.
Webb TR.
Zhu Y.-F.
Saunders J.
Liu X.-J.
Chen T.-K.
Bozigian H.
Grigoriadis DE.
J.
Med. Chem.
2004,
47:
4787
<A NAME="RT113911SS-5B">5b </A>
McCluskey A.
Keller PA.
Morgan J.
Garner J.
Org. Biomol. Chem.
2003,
1:
3353
<A NAME="RT113911SS-6A">6a </A>
Selleri S.
Bruni F.
Costagli C.
Costanzo A.
Guerrini G.
Ciciani G.
Gratteri P.
Besnard F.
Costa B.
Montali M.
Martini C.
Fohlin J.
De Siena G.
Aiello PA.
J. Med. Chem.
2005,
48:
6756
<A NAME="RT113911SS-6B">6b </A>
Lippa A.
Czobor P.
Stark J.
Beer B.
Kostakis E.
Gravielle M.
Bandyopadhyay S.
Russek SJ.
Gibbs TT.
Farb DH.
Skolnick P.
Proc.
Natl. Acad. Sci. U.S.A.
2005,
102:
7380
<A NAME="RT113911SS-6C">6c </A>
Platt DM.
Duggan A.
Spealman RD.
Cook JM.
Li X.
Yin W.
Rowlett JK.
J. Pharmacol. Exp. Ther.
2005,
313:
658
<A NAME="RT113911SS-6D">6d </A>
Foster AC.
Pelleymounter MA.
Cullen MJ.
Lewis D.
Joppa M.
Chen TK.
Bozigian HP.
Gross RS.
Gogas KR.
J.
Pharmacol. Exp. Ther.
2004,
311:
547
<A NAME="RT113911SS-6E">6e </A>
Sullivan SK.
Petroski RE.
Verge G.
Gross RS.
Foster AC.
Grigoriadis DE.
J.
Pharmacol. Exp. Ther.
2004,
311:
537
<A NAME="RT113911SS-6F">6f </A>
Sanger DJ.
CNS Drugs
2004,
18:
9
<A NAME="RT113911SS-6G">6g </A>
Hoepping A.
Diekers M.
Deuther-Conrad W.
Scheunemann M.
Fischer S.
Hiller A.
Wegner F.
Steinbach J.
Brust P.
Bioorg.
Med. Chem.
2008,
16:
1184
<A NAME="RT113911SS-7A">7a </A>
Lager E.
Andersson P.
Nilsson J.
Pettersson I.
Ostergaard E.
Nielsen M.
Sterner O.
Liljefors T.
J.
Med. Chem.
2006,
49:
2526
<A NAME="RT113911SS-7B">7b </A>
Selleri S.
Gratteri P.
Costagli C.
Bonaccini C.
Costanzo A.
Melani F.
Guerrini G.
Ciciani G.
Costa B.
Spinetti F.
Martini C.
Bruni F.
Bioorg. Med. Chem.
2005,
13:
4821
<A NAME="RT113911SS-8">8 </A>
Gentles RG.
Hu S.
Huang Y.
Grant-Young K.
Poss MA.
Andres C.
Fiedler T.
Knox R.
Lodge N.
Weaver D.
Harden DG.
Bioorg. Med. Chem. Lett.
2008,
18:
5694
<A NAME="RT113911SS-9">9 </A>
Zhou H.-B.
Sheng S.
Compton DR.
Kim Y.
Joachimiak A.
Sharma S.
Carlson KE.
Katzenellenbogen BS.
Nettles KW.
Greene GL.
Katzenellenbogen JA.
J. Med.
Chem.
2007,
50:
399
<A NAME="RT113911SS-10">10 </A>
Altenbach RJ.
Liu H.
Banfor PN.
Browman KE.
Fox GB.
Fryer RM.
Komater VA.
Krueger KM.
Marsh K.
Miller TR.
Pan JB.
Pan L.
Sun M.
Thiffault C.
Wetter J.
Zhao C.
Zhou D.
Esbenshade TA.
Hancock AA.
Cowart MD.
J.
Med. Chem.
2007,
50:
5439
<A NAME="RT113911SS-11">11 </A>
Shen HC.
Hammond ML.
Tata JR.
Colletti SL.
Taggart AKP.
Wilsie LC.
Waters MG.
Bioorg. Med. Chem.
Lett.
2008,
18:
4948
<A NAME="RT113911SS-12">12 </A>
Frey RR.
Curtin ML.
Albert DH.
Glaser KB.
Pease LJ.
Soni NB.
Bouska JJ.
Reuter D.
Stewart KD.
Marcotte P.
Bukofzer G.
Li J.
Davidsen SK.
Michaelides MR.
J.
Med. Chem.
2008,
51:
3777
<A NAME="RT113911SS-13">13 </A>
Dwyer MP.
Paruch K.
Alvarez C.
Doll RJ.
Keertikar K.
Duca J.
Fischmann TO.
Hruza A.
Madison V.
Lees E.
Parry D.
Seghezzi W.
Sgambellone N.
Shanahan F.
Wiswell D.
Guzi TJ.
Bioorg. Med. Chem. Lett.
2007,
17:
6216
<A NAME="RT113911SS-14A">14a </A>
Mukaiyama H.
Nishimura T.
Shiohara H.
Kobayashi S.
Komatsu Y.
Kikuchi S.
Tsuji E.
Kamada N.
Ohnota H.
Kusama H.
Chem. Pharm.
Bull.
2007,
55:
881
<A NAME="RT113911SS-14B">14b </A>
Mukaiyama H.
Nishimura T.
Kobayashi S.
Komatsu Y.
Kikuchi S.
Ozawa T.
Kamada N.
Ohnota H.
Bioorg. Med. Chem.
2008,
16:
909
<A NAME="RT113911SS-15A">15a </A>
Di Grandi MJ.
Berger DM.
Hopper DW.
Zhang C.
Dutia M.
Dunnick AL.
Torres N.
Levin JI.
Diamantidis G.
Zapf CW.
Collins K.
Frommer E.
Bioorg. Med. Chem. Lett.
2009,
19:
6957
<A NAME="RT113911SS-15B">15b </A>
Gopalsamy A.
Ciszewski G.
Shi M.
Berger D.
Hu Y.
Lee F.
Feldberg L.
Frommer E.
Kim S.
Collins K.
Wojciechowicz D.
Mallon R.
Bioorg.
Med. Chem. Lett.
2009,
19:
6890 ;
and references cited therein
<A NAME="RT113911SS-16">16 </A>
Cuny GD.
Yu PB.
Laha JK.
Xing X.
Liu J.-F.
Lai CS.
Deng DY.
Sachdanandan C.
Bloch KD.
Peterson RT.
Bioorg. Med. Chem.
Lett.
2008,
18:
4388
<A NAME="RT113911SS-17">17 </A>
Edmondson SD.
Mastracchio A.
Mathvink RJ.
He J.
Harper B.
Park Y.-J.
Beconi M.
Di Salvo J.
Eiermann GJ.
He H.
Leiting B.
Leone JF.
Levorse DA.
Lyons K.
Patel RA.
Patel SB.
Petrov A.
Scapin G.
Shang J.
Roy RS.
Smith A.
Wu JK.
Xu S.
Zhu B.
Thornberry NA.
Weber AE.
J. Med. Chem.
2006,
49:
3614
<A NAME="RT113911SS-18">18 </A>
Shaaban MR.
Saleh TS.
Mayhoub AS.
Mansour A.
Farag AM.
Bioorg. Med. Chem.
2008,
16:
6344
<A NAME="RT113911SS-19">19 </A>
Wang YD.
Honores E.
Wu B.
Johnson S.
Powell D.
Miranda M.
McGinnis JP.
Discafani C.
Rabindran SK.
Cheng W.
Krishnamurthy G.
Bioorg.
Med. Chem.
2009,
17:
2091
<A NAME="RT113911SS-20">20 </A>
Li J.
Zhao YF.
Zhao XL.
Yuan XY.
Gong P.
Arch. Pharm.
Chem. Life Sci.
2006,
339:
593
<A NAME="RT113911SS-21A">21a </A>
Gregg BT.
Tymoshenko DO.
Razzano DA.
Johnson MR.
J. Comb. Chem.
2007,
9:
507
<A NAME="RT113911SS-21B">21b </A>
Sagar R.
Park SB.
J. Org. Chem.
2008,
73:
3270
<A NAME="RT113911SS-22">22 </A>
Crystal data for 13d :
colorless crystals, C15 H19 N3 O5 , M = 321.33,
triclinic, space group = P
1 . At 293 K, a = 4.922(1) Å, b = 13.569(2) Å, c = 23.370(4) Å, α = 90.12(1)˚, β = 94.30(2)˚, γ = 92.94(2)˚, V = 1554.3(5) ų , Z = 4, d
calcd = 1.373
g/cm³ , µ (MoKα ) = 0.104
mm-¹ , F (000) = 680.
Intensities of 18299 reflections (9005 independent, R
int = 0.024)
were measured on an Xcalibur-3 diffractometer (graphite monochromated
MoKα radiation, CCD detector, ω-scaning,
2θ max = 60˚).
Crystal data for 13f : colorless crystals,
C13 H16 N4 O5 , M = 308.30, monoclinic,
space group = P 21 /c.
At 293 K, a = 9.0325(4) Å, b = 18.6803(6) Å, c = 9.5238(4) Å, α = 109.879(5)˚, V = 1511.2(1) ų , Z = 4, d
calcd = 1.355
g/cm³ , µ (MoKα ) = 0.106
mm-¹ , F (000) = 648.
Intensities of 17049 reflections (4400 independent, R
int = 0.027)
were measured on an Xcalibur-3 diffractometer (graphite monochromated MoKα radiation,
CCD detector, ω-scanning, 2θ max = 60˚). The
structures were solved by direct methods using the SHELXTL package.²³ Restrictions
on the bond lengths C(sp³ )-C(sp³ )
(1.54 Å) were applied during the refinement of structure 13d . The positions of the hydrogen atoms
were located from electron density difference maps and refined using
the riding model with U iso = nU eq of the carrier atom (n = 1.5 for
methyl and hydroxy groups and n = 1.2
for other hydrogen atoms). The hydrogen atom involved in formation of
the intermolecular hydrogen bond in structure 13f was refined
within isotropic approximation. Full-matrix least-squares refinement
of the structures against F
² in
anisotropic approximation for non-hydrogen atoms using 8831 (13d ) and 4364 (13f )
reflections was converged to wR 2 = 0.262 (R 1 = 0.076
for 4111 reflections with F >4s(F ), S = 0.957) for
structure 13d , and wR 2 = 0.122
(R 1 = 0.045
for 2326 reflections with F >4s(F ), S = 0.910)
for structure 13f . The final atomic coordinates,
and crystallographic data for molecules 13d and 13f have been deposited at the Cambridge
Crystallographic Data Centre, 12 Union Road, Cambridge, CB2 1EZ,
UK [fax: +44(1223)336033, e-mail: deposit@ccdc.cam.ac.uk] and
are available on request quoting the deposition numbers CCDC 843315
for 13d and CCDC 843316 for 13f .
<A NAME="RT113911SS-23">23 </A>
Sheldrick GM.
Acta
Crystallogr. Sect. A.
2008,
64:
112