Literature DB >> 22412686

7-Benzyl-3-(4-chloro-phen-yl)-2-isobutyl-amino-5,6,7,8-tetra-hydro-pyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4(3H)-one.

Hong Chen, Quan-Bin Liao.   

Abstract

In the title compound, C(26)H(27)ClN(4)OS, the thienopyrimidine fused-ring system is close to coplanar (r.m.s. deviation = 0.0089 Å), with a maximum deviation of 0.0283 (17) Å for the N atom adjacent to the benzene ring. This ring system forms dihedral angles of 83.51 (3) and 88.20 (5)° with the adjacent benzyl and phenyl rings, respectively. In the crystal, N-H⋯Cl inter-actions and C-H⋯O hydrogen bonds are observed.

Entities:  

Year:  2012        PMID: 22412686      PMCID: PMC3297883          DOI: 10.1107/S1600536812007246

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For the biological and pharmaceutical properties of compounds containing a fused thienopyrimidine system, see: Amr et al. (2010 ▶); Huang et al. (2009 ▶); Jennings et al. (2005 ▶); Kikuchi et al. (2006 ▶); Mavrova et al. (2010 ▶); Santagati et al. (2002 ▶). For similar crystal structures, see: Xie et al. (2008 ▶); Chen et al. (2011 ▶).

Experimental

Crystal data

C26H27ClN4OS M = 479.03 Monoclinic, a = 17.428 (13) Å b = 9.391 (7) Å c = 16.170 (13) Å β = 111.995 (7)° V = 2454 (3) Å3 Z = 4 Mo Kα radiation μ = 0.27 mm−1 T = 296 K 0.26 × 0.24 × 0.20 mm

Data collection

Bruker SMART CCD diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.934, T max = 0.949 25485 measured reflections 5611 independent reflections 3883 reflections with I > 2σ(I) R int = 0.090

Refinement

R[F 2 > 2σ(F 2)] = 0.070 wR(F 2) = 0.164 S = 1.06 5611 reflections 300 parameters H-atom parameters constrained Δρmax = 0.36 e Å−3 Δρmin = −0.26 e Å−3 Data collection: SMART (Bruker, 1997 ▶); cell refinement: SAINT (Bruker, 1997 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL. Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536812007246/nc2265sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812007246/nc2265Isup2.hkl Supplementary material file. DOI: 10.1107/S1600536812007246/nc2265Isup3.cml Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C26H27ClN4OSF(000) = 1008
Mr = 479.03Dx = 1.297 Mg m3
Monoclinic, P21/cMelting point: 462 K
Hall symbol: -P 2ybcMo Kα radiation, λ = 0.71073 Å
a = 17.428 (13) ÅCell parameters from 4592 reflections
b = 9.391 (7) Åθ = 2.5–27.5°
c = 16.170 (13) ŵ = 0.27 mm1
β = 111.995 (7)°T = 296 K
V = 2454 (3) Å3Prism, colourless
Z = 40.26 × 0.24 × 0.20 mm
Bruker SMART CCD diffractometer5611 independent reflections
Radiation source: fine-focus sealed tube3883 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.090
CCD Profile fitting scansθmax = 27.5°, θmin = 2.5°
Absorption correction: multi-scan (SADABS; Sheldrick, 1996)h = −22→22
Tmin = 0.934, Tmax = 0.949k = −12→12
25485 measured reflectionsl = −20→20
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.070Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.164H-atom parameters constrained
S = 1.06w = 1/[σ2(Fo2) + (0.0535P)2 + 1.2122P] where P = (Fo2 + 2Fc2)/3
5611 reflections(Δ/σ)max < 0.001
300 parametersΔρmax = 0.36 e Å3
0 restraintsΔρmin = −0.26 e Å3
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.
xyzUiso*/Ueq
Cl10.63895 (6)1.09995 (13)0.09315 (7)0.0814 (3)
C10.0316 (2)1.1445 (5)0.6378 (3)0.0782 (11)
H1−0.01881.18310.63370.094*
C20.0970 (2)1.2321 (4)0.6461 (2)0.0695 (10)
H20.09131.33030.64800.083*
C30.1715 (2)1.1734 (4)0.6516 (2)0.0585 (8)
H30.21581.23330.65770.070*
C40.18193 (19)1.0276 (3)0.64841 (19)0.0482 (7)
C50.1159 (2)0.9416 (4)0.6414 (3)0.0692 (10)
H50.12150.84310.64040.083*
C60.0411 (2)1.0003 (5)0.6358 (3)0.0870 (13)
H6−0.00320.94080.63050.104*
C70.26265 (19)0.9681 (4)0.65007 (19)0.0517 (7)
H7A0.30771.00670.70090.062*
H7B0.26270.86540.65700.062*
C80.35672 (18)0.9495 (4)0.57200 (19)0.0515 (7)
H8A0.35580.84620.57080.062*
H8B0.39920.97940.62780.062*
C90.37759 (17)1.0049 (4)0.49451 (18)0.0509 (7)
H9A0.38941.10610.50200.061*
H9B0.42640.95670.49340.061*
C100.30634 (16)0.9793 (3)0.40863 (17)0.0399 (6)
C110.23083 (16)0.9471 (3)0.40872 (17)0.0404 (6)
C120.20962 (17)0.9400 (3)0.49018 (18)0.0470 (7)
H12A0.15830.99080.47940.056*
H12B0.20160.84150.50300.056*
C130.30607 (15)0.9815 (3)0.31940 (17)0.0394 (6)
C140.23034 (16)0.9494 (3)0.25440 (18)0.0407 (6)
C150.27191 (17)0.9691 (3)0.13904 (18)0.0416 (6)
C160.37323 (17)1.0126 (3)0.29188 (18)0.0429 (6)
C170.41915 (16)1.0218 (3)0.16662 (17)0.0406 (6)
C180.43494 (19)1.1580 (3)0.1439 (2)0.0519 (7)
H180.40051.23320.14450.062*
C190.50245 (19)1.1807 (4)0.1202 (2)0.0549 (8)
H190.51411.27170.10540.066*
C200.55211 (18)1.0682 (4)0.11873 (19)0.0511 (7)
C210.53581 (18)0.9314 (4)0.1390 (2)0.0522 (8)
H210.56900.85580.13560.063*
C220.46907 (18)0.9086 (3)0.16437 (19)0.0474 (7)
H220.45800.81770.17980.057*
C230.17702 (19)0.9558 (3)−0.01924 (19)0.0538 (8)
H23A0.14110.90490.00410.065*
H23B0.18080.9003−0.06820.065*
C240.1383 (2)1.0970 (4)−0.0548 (2)0.0699 (10)
H240.13881.1552−0.00430.084*
C250.1863 (3)1.1749 (5)−0.1013 (3)0.1069 (17)
H25A0.24081.1960−0.05910.160*
H25B0.15831.2620−0.12610.160*
H25C0.19031.1162−0.14810.160*
C260.0481 (3)1.0733 (6)−0.1165 (3)0.1126 (18)
H26A0.02311.1631−0.14010.169*
H26B0.01851.0301−0.08350.169*
H26C0.04611.0118−0.16470.169*
N10.27599 (14)1.0031 (3)0.56719 (14)0.0423 (5)
N20.21063 (14)0.9434 (3)0.16459 (15)0.0438 (6)
N30.35216 (13)0.9995 (3)0.19807 (14)0.0419 (5)
N40.25971 (15)0.9662 (3)0.05109 (15)0.0527 (6)
H40.30200.97070.03600.079*
S10.15757 (4)0.91648 (9)0.30144 (5)0.0500 (2)
O10.44421 (12)1.0478 (3)0.33911 (13)0.0578 (6)
U11U22U33U12U13U23
Cl10.0590 (5)0.1216 (9)0.0769 (6)−0.0133 (5)0.0407 (5)−0.0021 (6)
C10.064 (2)0.086 (3)0.100 (3)0.006 (2)0.048 (2)0.002 (2)
C20.071 (2)0.064 (2)0.084 (3)0.0060 (18)0.042 (2)−0.0009 (19)
C30.0549 (19)0.060 (2)0.064 (2)−0.0091 (15)0.0263 (17)−0.0018 (16)
C40.0508 (17)0.059 (2)0.0379 (15)−0.0035 (14)0.0198 (14)0.0015 (13)
C50.070 (2)0.062 (2)0.084 (3)−0.0081 (18)0.039 (2)0.0008 (18)
C60.062 (2)0.086 (3)0.126 (4)−0.018 (2)0.051 (3)−0.003 (3)
C70.0520 (18)0.062 (2)0.0397 (16)0.0025 (14)0.0156 (14)0.0039 (13)
C80.0393 (16)0.070 (2)0.0397 (15)0.0056 (14)0.0086 (13)0.0014 (14)
C90.0308 (14)0.079 (2)0.0394 (15)0.0008 (14)0.0087 (12)−0.0056 (14)
C100.0313 (13)0.0452 (16)0.0382 (14)0.0002 (11)0.0074 (11)−0.0034 (11)
C110.0371 (14)0.0460 (17)0.0352 (13)−0.0030 (11)0.0102 (12)−0.0041 (11)
C120.0397 (15)0.0570 (19)0.0441 (16)−0.0074 (13)0.0154 (13)−0.0044 (13)
C130.0301 (13)0.0477 (17)0.0371 (14)−0.0011 (11)0.0087 (11)−0.0014 (11)
C140.0328 (14)0.0461 (17)0.0394 (14)−0.0035 (11)0.0091 (12)−0.0007 (11)
C150.0379 (14)0.0441 (17)0.0376 (14)0.0008 (11)0.0082 (12)0.0002 (11)
C160.0364 (14)0.0502 (18)0.0376 (14)0.0011 (12)0.0087 (12)−0.0021 (12)
C170.0358 (14)0.0475 (17)0.0365 (14)−0.0018 (12)0.0111 (12)0.0013 (11)
C180.0524 (18)0.0488 (19)0.0556 (18)0.0061 (14)0.0216 (15)0.0053 (14)
C190.0542 (18)0.056 (2)0.0566 (18)−0.0067 (15)0.0230 (16)0.0079 (14)
C200.0418 (16)0.070 (2)0.0422 (16)−0.0064 (14)0.0162 (14)−0.0015 (14)
C210.0429 (16)0.063 (2)0.0484 (17)0.0054 (14)0.0140 (14)−0.0098 (14)
C220.0459 (16)0.0445 (17)0.0498 (16)−0.0005 (13)0.0158 (14)−0.0005 (13)
C230.0480 (17)0.066 (2)0.0369 (15)−0.0093 (14)0.0037 (14)0.0019 (13)
C240.065 (2)0.066 (2)0.059 (2)0.0075 (18)0.0009 (18)−0.0100 (17)
C250.109 (4)0.074 (3)0.102 (3)−0.022 (3)−0.001 (3)0.032 (3)
C260.068 (3)0.124 (4)0.104 (4)0.014 (3)−0.015 (3)0.004 (3)
N10.0377 (12)0.0533 (15)0.0338 (11)0.0022 (10)0.0107 (10)−0.0011 (10)
N20.0344 (12)0.0553 (16)0.0363 (12)−0.0041 (10)0.0071 (10)−0.0018 (10)
N30.0338 (12)0.0507 (15)0.0380 (12)−0.0038 (10)0.0098 (10)0.0003 (10)
N40.0385 (13)0.0814 (19)0.0333 (12)−0.0024 (12)0.0079 (11)0.0015 (11)
S10.0332 (4)0.0741 (6)0.0398 (4)−0.0117 (3)0.0102 (3)−0.0071 (3)
O10.0337 (10)0.0945 (18)0.0403 (11)−0.0104 (10)0.0081 (9)−0.0057 (10)
Cl1—C201.738 (3)C14—N21.362 (4)
C1—C61.366 (6)C14—S11.734 (3)
C1—C21.371 (5)C15—N21.304 (3)
C1—H10.9300C15—N41.357 (4)
C2—C31.382 (5)C15—N31.396 (3)
C2—H20.9300C16—O11.231 (3)
C3—C41.384 (5)C16—N31.426 (4)
C3—H30.9300C17—C221.383 (4)
C4—C51.375 (5)C17—C181.386 (4)
C4—C71.505 (4)C17—N31.453 (3)
C5—C61.388 (5)C18—C191.383 (4)
C5—H50.9300C18—H180.9300
C6—H60.9300C19—C201.372 (4)
C7—N11.481 (4)C19—H190.9300
C7—H7A0.9700C20—C211.381 (4)
C7—H7B0.9700C21—C221.387 (4)
C8—N11.469 (4)C21—H210.9300
C8—C91.521 (4)C22—H220.9300
C8—H8A0.9700C23—N41.467 (4)
C8—H8B0.9700C23—C241.501 (5)
C9—C101.495 (4)C23—H23A0.9700
C9—H9A0.9700C23—H23B0.9700
C9—H9B0.9700C24—C251.507 (6)
C10—C111.351 (4)C24—C261.530 (5)
C10—C131.441 (4)C24—H240.9800
C11—C121.497 (4)C25—H25A0.9600
C11—S11.750 (3)C25—H25B0.9600
C12—N11.470 (3)C25—H25C0.9600
C12—H12A0.9700C26—H26A0.9600
C12—H12B0.9700C26—H26B0.9600
C13—C141.378 (4)C26—H26C0.9600
C13—C161.429 (4)N4—H40.8600
C6—C1—C2119.6 (4)O1—C16—N3118.8 (3)
C6—C1—H1120.2O1—C16—C13127.7 (3)
C2—C1—H1120.2N3—C16—C13113.5 (2)
C1—C2—C3119.6 (4)C22—C17—C18120.8 (3)
C1—C2—H2120.2C22—C17—N3119.6 (3)
C3—C2—H2120.2C18—C17—N3119.4 (3)
C2—C3—C4121.7 (3)C19—C18—C17119.3 (3)
C2—C3—H3119.2C19—C18—H18120.3
C4—C3—H3119.2C17—C18—H18120.3
C5—C4—C3117.8 (3)C20—C19—C18119.6 (3)
C5—C4—C7122.1 (3)C20—C19—H19120.2
C3—C4—C7120.1 (3)C18—C19—H19120.2
C4—C5—C6120.6 (4)C19—C20—C21121.7 (3)
C4—C5—H5119.7C19—C20—Cl1118.9 (3)
C6—C5—H5119.7C21—C20—Cl1119.4 (2)
C1—C6—C5120.7 (4)C20—C21—C22118.9 (3)
C1—C6—H6119.6C20—C21—H21120.6
C5—C6—H6119.6C22—C21—H21120.6
N1—C7—C4111.3 (2)C17—C22—C21119.7 (3)
N1—C7—H7A109.4C17—C22—H22120.2
C4—C7—H7A109.4C21—C22—H22120.2
N1—C7—H7B109.4N4—C23—C24114.1 (3)
C4—C7—H7B109.4N4—C23—H23A108.7
H7A—C7—H7B108.0C24—C23—H23A108.7
N1—C8—C9111.0 (2)N4—C23—H23B108.7
N1—C8—H8A109.4C24—C23—H23B108.7
C9—C8—H8A109.4H23A—C23—H23B107.6
N1—C8—H8B109.4C23—C24—C25111.4 (3)
C9—C8—H8B109.4C23—C24—C26109.0 (3)
H8A—C8—H8B108.0C25—C24—C26111.8 (4)
C10—C9—C8109.8 (2)C23—C24—H24108.2
C10—C9—H9A109.7C25—C24—H24108.2
C8—C9—H9A109.7C26—C24—H24108.2
C10—C9—H9B109.7C24—C25—H25A109.5
C8—C9—H9B109.7C24—C25—H25B109.5
H9A—C9—H9B108.2H25A—C25—H25B109.5
C11—C10—C13111.5 (2)C24—C25—H25C109.5
C11—C10—C9120.4 (2)H25A—C25—H25C109.5
C13—C10—C9128.1 (2)H25B—C25—H25C109.5
C10—C11—C12124.9 (2)C24—C26—H26A109.5
C10—C11—S1112.7 (2)C24—C26—H26B109.5
C12—C11—S1122.4 (2)H26A—C26—H26B109.5
N1—C12—C11110.6 (2)C24—C26—H26C109.5
N1—C12—H12A109.5H26A—C26—H26C109.5
C11—C12—H12A109.5H26B—C26—H26C109.5
N1—C12—H12B109.5C12—N1—C8109.9 (2)
C11—C12—H12B109.5C12—N1—C7109.7 (2)
H12A—C12—H12B108.1C8—N1—C7110.4 (2)
C14—C13—C16118.0 (2)C15—N2—C14114.9 (2)
C14—C13—C10113.8 (2)C15—N3—C16122.5 (2)
C16—C13—C10128.2 (2)C15—N3—C17121.4 (2)
N2—C14—C13127.5 (3)C16—N3—C17116.1 (2)
N2—C14—S1121.8 (2)C15—N4—C23122.5 (3)
C13—C14—S1110.7 (2)C15—N4—H4118.8
N2—C15—N4120.2 (2)C23—N4—H4118.8
N2—C15—N3123.4 (2)C14—S1—C1191.35 (14)
N4—C15—N3116.4 (2)
C6—C1—C2—C30.4 (6)C19—C20—C21—C22−2.2 (5)
C1—C2—C3—C40.5 (5)Cl1—C20—C21—C22176.3 (2)
C2—C3—C4—C5−1.4 (5)C18—C17—C22—C210.0 (4)
C2—C3—C4—C7177.0 (3)N3—C17—C22—C21−176.5 (3)
C3—C4—C5—C61.4 (5)C20—C21—C22—C171.7 (4)
C7—C4—C5—C6−176.9 (4)N4—C23—C24—C2564.8 (4)
C2—C1—C6—C5−0.4 (7)N4—C23—C24—C26−171.4 (3)
C4—C5—C6—C1−0.5 (7)C11—C12—N1—C8−46.5 (3)
C5—C4—C7—N1110.2 (3)C11—C12—N1—C7−168.0 (2)
C3—C4—C7—N1−68.1 (4)C9—C8—N1—C1268.1 (3)
N1—C8—C9—C10−50.3 (3)C9—C8—N1—C7−170.8 (3)
C8—C9—C10—C1115.6 (4)C4—C7—N1—C12−61.3 (3)
C8—C9—C10—C13−163.2 (3)C4—C7—N1—C8177.5 (3)
C13—C10—C11—C12−178.3 (3)N4—C15—N2—C14−180.0 (3)
C9—C10—C11—C122.7 (4)N3—C15—N2—C140.5 (4)
C13—C10—C11—S10.7 (3)C13—C14—N2—C151.3 (4)
C9—C10—C11—S1−178.3 (2)S1—C14—N2—C15−179.3 (2)
C10—C11—C12—N112.6 (4)N2—C15—N3—C16−3.5 (4)
S1—C11—C12—N1−166.3 (2)N4—C15—N3—C16177.0 (3)
C11—C10—C13—C14−0.7 (4)N2—C15—N3—C17177.5 (3)
C9—C10—C13—C14178.2 (3)N4—C15—N3—C17−2.0 (4)
C11—C10—C13—C16179.2 (3)O1—C16—N3—C15−175.8 (3)
C9—C10—C13—C16−1.9 (5)C13—C16—N3—C154.3 (4)
C16—C13—C14—N2−0.1 (5)O1—C16—N3—C173.3 (4)
C10—C13—C14—N2179.8 (3)C13—C16—N3—C17−176.6 (2)
C16—C13—C14—S1−179.6 (2)C22—C17—N3—C15−93.6 (3)
C10—C13—C14—S10.3 (3)C18—C17—N3—C1589.9 (3)
C14—C13—C16—O1177.5 (3)C22—C17—N3—C1687.3 (3)
C10—C13—C16—O1−2.3 (5)C18—C17—N3—C16−89.2 (3)
C14—C13—C16—N3−2.6 (4)N2—C15—N4—C239.3 (4)
C10—C13—C16—N3177.6 (3)N3—C15—N4—C23−171.2 (3)
C22—C17—C18—C19−1.2 (4)C24—C23—N4—C1592.6 (4)
N3—C17—C18—C19175.3 (3)N2—C14—S1—C11−179.4 (2)
C17—C18—C19—C200.7 (5)C13—C14—S1—C110.1 (2)
C18—C19—C20—C211.0 (5)C10—C11—S1—C14−0.5 (2)
C18—C19—C20—Cl1−177.5 (2)C12—C11—S1—C14178.5 (3)
D—H···AD—HH···AD···AD—H···A
N4—H4···Cl1i0.862.733.469 (3)144
C8—H8B···O1ii0.972.593.220 (4)123
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
N4—H4⋯Cl1i0.862.733.469 (3)144
C8—H8B⋯O1ii0.972.593.220 (4)123

Symmetry codes: (i) ; (ii) .

  9 in total

1.  Synthesis, antitrichinnellosis and antiprotozoal activity of some novel thieno[2,3-d]pyrimidin-4(3H)-ones containing benzimidazole ring.

Authors:  Anelia Ts Mavrova; Dimitar Vuchev; Kameliya Anichina; Nikolay Vassilev
Journal:  Eur J Med Chem       Date:  2010-09-25       Impact factor: 6.514

2.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

3.  Parallel synthesis and biological evaluation of 5,6,7,8-tetrahydrobenzothieno[2,3-d]pyrimidin-4(3H)-one cytotoxic agents selective for p21-deficient cells.

Authors:  Lee D Jennings; Scott L Kincaid; Yanong D Wang; Girija Krishnamurthy; Carl F Beyer; John P McGinnis; Miriam Miranda; Carolyn M Discafani; Sridhar K Rabindran
Journal:  Bioorg Med Chem Lett       Date:  2005-11-01       Impact factor: 2.823

4.  Synthesis and spasmolytic action of 2-substituted thienopyrimidin-4-one derivatives.

Authors:  Natale Alfredo Santagati; Orazio Prezzavento; Ennio Bousquet; Giuseppe Ronsisvalle; Santi Spampinato
Journal:  J Pharm Pharmacol       Date:  2002-05       Impact factor: 3.765

5.  Exploration of a new type of antimalarial compounds based on febrifugine.

Authors:  Haruhisa Kikuchi; Keisuke Yamamoto; Seiko Horoiwa; Shingo Hirai; Ryota Kasahara; Norimitsu Hariguchi; Makoto Matsumoto; Yoshiteru Oshima
Journal:  J Med Chem       Date:  2006-07-27       Impact factor: 7.446

6.  Antiarrhythmic, serotonin antagonist and antianxiety activities of novel substituted thiophene derivatives synthesized from 2-amino-4,5,6,7-tetrahydro-N-phenylbenzo[b]thiophene-3-carboxamide.

Authors:  Abd El-Galil E Amr; Mohamed H Sherif; Mohamed G Assy; Mohamed A Al-Omar; Islam Ragab
Journal:  Eur J Med Chem       Date:  2010-10-14       Impact factor: 6.514

7.  3-Phenyl-2-(piperidin-1-yl)-3,5,6,8-tetra-hydro-4H-thio-pyrano[3',4':2,3]thieno[5,4-d]pyrimidin-4-one.

Authors:  Hai Xie; Shuang-Ming Meng; Yue-Qin Fan; Yong Guo
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2008-11-26

8.  Efficient synthesis and biological evaluation of 1,2,9-trisubstituted 1,9-dihydro-6H-purin-6-ones.

Authors:  Nian-Yu Huang; Yong-Ju Liang; Ming-Wu Ding; Li-Wu Fu; Hong-Wu He
Journal:  Bioorg Med Chem Lett       Date:  2008-12-07       Impact factor: 2.823

9.  7-Benzyl-3-(4-fluoro-phen-yl)-2-(pyrrol-idin-1-yl)-5,6,7,8-tetra-hydro-pyrido[4',3':4,5]thieno[2,3-d]pyrimidin-4(3H)-one.

Authors:  Hong Chen; Hai-Jun Hu; Kai Yan; Qiu-Hong Dai
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-08-02
  9 in total

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