Literature DB >> 22719419

14,15-Didehydro-hellebrigenin.

Tong Yu1, Hai-Yan Tian, Xiao-Feng Yuan, Shu-Zhi Hu, Ren-Wang Jiang.   

Abstract

The title compound, C(24)H(30)O(5), is the didehydro product of the steroid hellebrigenin (systematic name: 3β,5,14-trihy-droxy-19-oxo-5β-bufa-20,22-dienolide). It consists of three cyclo-hexane rings (A, B and C), a five-membered ring (D) and a six-membered lactone ring (E). The stereochemistry of the ring junctions are A/B cis, B/C trans and C/D cis. Cyclo-hexane rings A, B and C have normal chair conformations. The five-membered ring D with the C=C bond adopts an envelope conformation. Lactone ring E is essentially planar with a mean derivation of 0.006 (4) Å and is β-oriented at the C atom of ring D to which it is attached. There is an O-H⋯O hydrogen bond in the mol-ecule involving the hy-droxy groups. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules into chains propagating along [010]. The chains are linked by C-H⋯O contacts into a three-dimensional network.

Entities:  

Year:  2012        PMID: 22719419      PMCID: PMC3379221          DOI: 10.1107/S1600536812018570

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


Related literature

For previous isolations of hellebrigenin, see: Urscheler et al. (1955 ▶); Yang et al. (2010 ▶); Zhao et al. (2010 ▶). For its inhibitory activity against adenosinetriphosphatase of the 3-acetate, 3,5-diacetate, 3-iodo­acetate and 3-bromo­acetate of hellebrigenin, see: Ruoho et al. (1968 ▶). For the treatment of hellebrigenin with sodium hydroxide, see: Kupchan et al. (1969 ▶). For the stereochemistry of bufalin and secohellebrigeninamide, see: Rohrer et al. (1982 ▶); Yuan et al. (2012 ▶).

Experimental

Crystal data

C24H30O5 M = 398.48 Monoclinic, a = 10.7628 (4) Å b = 6.6016 (2) Å c = 14.6376 (5) Å β = 94.224 (3)° V = 1037.20 (6) Å3 Z = 2 Cu Kα radiation μ = 0.71 mm−1 T = 291 K 0.40 × 0.26 × 0.23 mm

Data collection

Oxford Gemini S Ultra Sapphire CCD diffractometer Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011 ▶) T min = 0.819, T max = 1.000 3100 measured reflections 2238 independent reflections 2042 reflections with I > 2σ(I) R int = 0.023

Refinement

R[F 2 > 2σ(F 2)] = 0.042 wR(F 2) = 0.115 S = 1.04 2238 reflections 266 parameters 1 restraint H-atom parameters constrained Δρmax = 0.24 e Å−3 Δρmin = −0.20 e Å−3 Data collection: CrysAlis PRO (Agilent, 2011 ▶); cell refinement: CrysAlis PRO; data reduction: XPREP (Sheldrick, 2008 ▶); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: XP in SHELXTL (Sheldrick, 2008 ▶); software used to prepare material for publication: SHELXTL. Crystal structure: contains datablock(s) I, global. DOI: 10.1107/S1600536812018570/su2412sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812018570/su2412Isup2.hkl Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C24H30O5F(000) = 428
Mr = 398.48Dx = 1.276 Mg m3
Monoclinic, P21Cu Kα radiation, λ = 1.54184 Å
a = 10.7628 (4) ÅCell parameters from 1435 reflections
b = 6.6016 (2) Åθ = 3.0–62.5°
c = 14.6376 (5) ŵ = 0.71 mm1
β = 94.224 (3)°T = 291 K
V = 1037.20 (6) Å3Prism, colourless
Z = 20.40 × 0.26 × 0.23 mm
Oxford Gemini S Ultra Sapphire CCD diffractometer2238 independent reflections
Radiation source: fine-focus sealed tube2042 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.023
ω scanθmax = 62.6°, θmin = 3.0°
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2011)h = −6→12
Tmin = 0.819, Tmax = 1.000k = −7→4
3100 measured reflectionsl = −16→16
Refinement on F2Secondary atom site location: difference Fourier map
Least-squares matrix: fullHydrogen site location: inferred from neighbouring sites
R[F2 > 2σ(F2)] = 0.042H-atom parameters constrained
wR(F2) = 0.115w = 1/[σ2(Fo2) + (0.0726P)2 + 0.1057P] where P = (Fo2 + 2Fc2)/3
S = 1.04(Δ/σ)max < 0.001
2238 reflectionsΔρmax = 0.24 e Å3
266 parametersΔρmin = −0.20 e Å3
1 restraintExtinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4
Primary atom site location: structure-invariant direct methodsExtinction coefficient: 0.0045 (12)
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell esds are taken into account in the estimation of distances, angles and torsion angles
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
O10.40415 (18)0.7669 (4)1.06950 (14)0.0564 (7)
O20.3968 (2)0.9967 (4)0.91061 (15)0.0605 (8)
O30.1076 (3)1.2425 (4)0.8935 (2)0.0882 (11)
O4−0.6574 (2)0.2486 (7)0.5959 (2)0.0998 (13)
O5−0.4844 (3)0.2651 (7)0.69025 (19)0.1009 (13)
C10.1594 (2)0.8911 (5)0.98577 (16)0.0395 (8)
C20.1910 (3)0.6866 (5)1.02785 (18)0.0438 (9)
C30.3250 (3)0.6280 (5)1.01530 (18)0.0478 (9)
C40.3517 (3)0.6385 (5)0.91490 (19)0.0475 (9)
C50.3174 (2)0.8405 (5)0.86880 (19)0.0451 (9)
C60.3428 (3)0.8346 (7)0.7677 (2)0.0609 (13)
C70.2526 (3)0.6979 (6)0.71152 (19)0.0552 (10)
C80.1166 (2)0.7489 (5)0.72275 (17)0.0435 (9)
C90.0893 (2)0.7573 (5)0.82503 (16)0.0358 (8)
C100.1798 (2)0.9001 (4)0.88277 (16)0.0376 (8)
C11−0.0483 (2)0.8023 (5)0.83501 (19)0.0438 (9)
C12−0.1299 (2)0.6349 (5)0.79095 (17)0.0427 (9)
C13−0.1110 (2)0.6065 (5)0.68901 (16)0.0390 (8)
C140.0279 (2)0.6028 (5)0.67349 (16)0.0414 (8)
C150.0524 (3)0.4602 (6)0.61287 (19)0.0544 (10)
C16−0.0631 (3)0.3465 (6)0.5790 (2)0.0597 (10)
C17−0.1499 (3)0.3905 (5)0.65465 (18)0.0439 (9)
C18−0.1773 (3)0.7733 (6)0.6318 (2)0.0599 (11)
C190.1572 (3)1.1166 (5)0.8511 (2)0.0560 (11)
C20−0.2876 (3)0.3558 (5)0.63458 (18)0.0459 (9)
C21−0.3594 (3)0.3021 (8)0.7029 (2)0.0707 (13)
C22−0.3499 (3)0.3797 (7)0.5489 (2)0.0683 (13)
C23−0.4722 (3)0.3462 (7)0.5348 (2)0.0660 (13)
C24−0.5468 (3)0.2853 (7)0.6046 (3)0.0716 (13)
H10.470400.711201.085200.0850*
H1A0.210600.993801.017500.0470*
H1B0.073000.922300.994400.0470*
H20.407800.975400.965800.0910*
H2A0.135700.584900.999600.0530*
H2B0.178200.690501.092700.0530*
H30.340000.489701.037800.0570*
H4A0.305800.531300.882100.0570*
H4B0.439700.613500.909900.0570*
H6A0.336700.970900.743000.0730*
H6B0.427100.787100.762000.0730*
H7A0.267900.558400.729800.0660*
H7B0.268400.709700.647300.0660*
H80.100200.883700.696500.0520*
H90.104400.620500.849300.0430*
H11A−0.062900.813000.899400.0530*
H11B−0.070200.930800.806000.0530*
H12A−0.216600.667000.797900.0510*
H12B−0.111000.508600.822900.0510*
H150.131400.434100.593800.0650*
H16A−0.047000.202600.573700.0720*
H16B−0.097000.397900.520200.0720*
H17−0.124100.298200.704900.0530*
H18A−0.264800.769900.640500.0900*
H18B−0.164900.752200.568300.0900*
H18C−0.143900.902800.650800.0900*
H190.184101.153400.794500.0670*
H21−0.321400.289800.761700.0850*
H22−0.305400.420100.499900.0820*
H23−0.509600.364100.476100.0790*
U11U22U33U12U13U23
O10.0446 (11)0.0602 (15)0.0613 (12)0.0074 (11)−0.0164 (9)−0.0076 (12)
O20.0543 (12)0.0632 (16)0.0627 (12)−0.0261 (12)−0.0045 (10)−0.0051 (12)
O30.116 (2)0.0359 (15)0.112 (2)0.0128 (16)0.0031 (17)0.0009 (16)
O40.0522 (14)0.124 (3)0.120 (2)−0.0018 (18)−0.0148 (14)−0.038 (2)
O50.0697 (16)0.150 (3)0.0816 (17)−0.025 (2)−0.0037 (13)0.007 (2)
C10.0372 (13)0.0389 (16)0.0414 (13)−0.0009 (12)−0.0037 (10)−0.0075 (13)
C20.0453 (15)0.0443 (18)0.0412 (13)−0.0040 (13)−0.0007 (11)0.0019 (13)
C30.0476 (15)0.0405 (18)0.0535 (15)0.0029 (14)−0.0081 (12)−0.0001 (14)
C40.0372 (14)0.0475 (19)0.0573 (15)0.0057 (13)0.0012 (11)−0.0085 (15)
C50.0384 (14)0.0475 (19)0.0486 (14)−0.0148 (14)−0.0012 (11)−0.0030 (14)
C60.0495 (16)0.080 (3)0.0543 (16)−0.0202 (18)0.0106 (13)0.0022 (18)
C70.0486 (16)0.075 (2)0.0433 (14)−0.0173 (16)0.0113 (11)−0.0056 (16)
C80.0496 (15)0.0422 (18)0.0382 (13)−0.0053 (14)0.0008 (11)0.0031 (13)
C90.0392 (13)0.0307 (15)0.0370 (12)−0.0043 (12)−0.0011 (9)−0.0034 (12)
C100.0413 (13)0.0304 (15)0.0404 (13)−0.0012 (12)−0.0026 (10)−0.0007 (12)
C110.0411 (14)0.0432 (18)0.0458 (14)0.0023 (13)−0.0048 (11)−0.0111 (13)
C120.0375 (13)0.0494 (18)0.0408 (13)−0.0058 (13)0.0007 (10)−0.0094 (14)
C130.0458 (14)0.0342 (16)0.0361 (12)−0.0023 (13)−0.0039 (10)−0.0006 (12)
C140.0467 (14)0.0467 (18)0.0306 (11)−0.0092 (14)0.0020 (10)0.0004 (13)
C150.0555 (17)0.061 (2)0.0475 (15)−0.0072 (17)0.0087 (12)−0.0118 (17)
C160.0653 (18)0.062 (2)0.0520 (15)−0.0126 (18)0.0053 (14)−0.0218 (16)
C170.0509 (15)0.0412 (17)0.0388 (12)−0.0044 (14)−0.0010 (11)−0.0025 (13)
C180.069 (2)0.0444 (19)0.0628 (18)−0.0022 (17)−0.0196 (14)0.0090 (17)
C190.069 (2)0.0352 (18)0.0610 (17)−0.0103 (17)−0.0131 (15)0.0044 (16)
C200.0526 (15)0.0406 (17)0.0431 (13)−0.0074 (15)−0.0064 (12)−0.0031 (14)
C210.0501 (17)0.106 (3)0.0540 (17)−0.021 (2)−0.0095 (13)0.010 (2)
C220.072 (2)0.082 (3)0.0487 (16)−0.021 (2)−0.0097 (15)0.0023 (19)
C230.0618 (19)0.079 (3)0.0527 (16)−0.0093 (19)−0.0253 (15)−0.0017 (18)
C240.0517 (18)0.079 (3)0.081 (2)0.002 (2)−0.0169 (16)−0.020 (2)
O1—C31.448 (4)C20—C221.387 (4)
O2—C51.446 (4)C22—C231.336 (5)
O3—C191.187 (4)C23—C241.404 (5)
O4—C241.212 (4)C1—H1A0.9700
O5—C211.367 (5)C1—H1B0.9700
O5—C241.384 (5)C2—H2A0.9700
O1—H10.8200C2—H2B0.9700
O2—H20.8200C3—H30.9800
C1—C101.541 (3)C4—H4A0.9700
C1—C21.512 (4)C4—H4B0.9700
C2—C31.517 (5)C6—H6A0.9700
C3—C41.520 (4)C6—H6B0.9700
C4—C51.528 (5)C7—H7A0.9700
C5—C101.560 (3)C7—H7B0.9700
C5—C61.525 (4)C8—H80.9800
C6—C71.522 (5)C9—H90.9800
C7—C81.523 (4)C11—H11A0.9700
C8—C91.548 (3)C11—H11B0.9700
C8—C141.503 (4)C12—H12A0.9700
C9—C101.559 (4)C12—H12B0.9700
C9—C111.528 (3)C15—H150.9300
C10—C191.517 (4)C16—H16A0.9700
C11—C121.525 (4)C16—H16B0.9700
C12—C131.532 (3)C17—H170.9800
C13—C141.529 (3)C18—H18A0.9600
C13—C171.559 (5)C18—H18B0.9600
C13—C181.528 (5)C18—H18C0.9600
C14—C151.333 (4)C19—H190.9300
C15—C161.505 (5)C21—H210.9300
C16—C171.528 (4)C22—H220.9300
C17—C201.507 (5)C23—H230.9300
C20—C211.355 (4)
C21—O5—C24120.8 (3)C3—C2—H2A109.00
C3—O1—H1110.00C3—C2—H2B109.00
C5—O2—H2109.00H2A—C2—H2B108.00
C2—C1—C10112.9 (2)O1—C3—H3109.00
C1—C2—C3111.4 (2)C2—C3—H3109.00
O1—C3—C2107.4 (2)C4—C3—H3109.00
O1—C3—C4110.8 (3)C3—C4—H4A109.00
C2—C3—C4110.8 (2)C3—C4—H4B109.00
C3—C4—C5114.2 (3)C5—C4—H4A109.00
O2—C5—C10107.6 (2)C5—C4—H4B109.00
C4—C5—C6110.6 (3)H4A—C4—H4B108.00
C4—C5—C10111.3 (2)C5—C6—H6A109.00
C6—C5—C10111.9 (2)C5—C6—H6B109.00
O2—C5—C6106.6 (2)C7—C6—H6A109.00
O2—C5—C4108.6 (2)C7—C6—H6B109.00
C5—C6—C7112.8 (3)H6A—C6—H6B108.00
C6—C7—C8113.0 (3)C6—C7—H7A109.00
C9—C8—C14109.1 (2)C6—C7—H7B109.00
C7—C8—C9111.4 (2)C8—C7—H7A109.00
C7—C8—C14112.8 (3)C8—C7—H7B109.00
C8—C9—C10113.0 (2)H7A—C7—H7B108.00
C8—C9—C11110.72 (19)C7—C8—H8108.00
C10—C9—C11113.7 (2)C9—C8—H8108.00
C1—C10—C5108.88 (19)C14—C8—H8108.00
C5—C10—C9109.7 (2)C8—C9—H9106.00
C5—C10—C19109.3 (2)C10—C9—H9106.00
C9—C10—C19108.9 (2)C11—C9—H9106.00
C1—C10—C9112.3 (2)C9—C11—H11A110.00
C1—C10—C19107.7 (2)C9—C11—H11B110.00
C9—C11—C12110.5 (2)C12—C11—H11A110.00
C11—C12—C13112.8 (2)C12—C11—H11B110.00
C12—C13—C17112.0 (2)H11A—C11—H11B108.00
C12—C13—C14110.37 (18)C11—C12—H12A109.00
C14—C13—C18110.6 (2)C11—C12—H12B109.00
C17—C13—C18112.3 (2)C13—C12—H12A109.00
C12—C13—C18110.8 (2)C13—C12—H12B109.00
C14—C13—C17100.4 (2)H12A—C12—H12B108.00
C13—C14—C15110.7 (2)C14—C15—H15124.00
C8—C14—C13120.8 (2)C16—C15—H15124.00
C8—C14—C15128.5 (2)C15—C16—H16A112.00
C14—C15—C16111.9 (3)C15—C16—H16B111.00
C15—C16—C17101.6 (3)C17—C16—H16A112.00
C13—C17—C20116.0 (3)C17—C16—H16B111.00
C16—C17—C20118.3 (2)H16A—C16—H16B109.00
C13—C17—C16104.1 (2)C13—C17—H17106.00
O3—C19—C10124.6 (3)C16—C17—H17106.00
C17—C20—C22124.2 (3)C20—C17—H17106.00
C17—C20—C21120.1 (3)C13—C18—H18A109.00
C21—C20—C22115.7 (3)C13—C18—H18B110.00
O5—C21—C20123.8 (3)C13—C18—H18C109.00
C20—C22—C23121.8 (3)H18A—C18—H18B109.00
C22—C23—C24123.0 (3)H18A—C18—H18C109.00
O5—C24—C23114.9 (3)H18B—C18—H18C110.00
O4—C24—O5118.9 (4)O3—C19—H19118.00
O4—C24—C23126.2 (4)C10—C19—H19118.00
C2—C1—H1A109.00O5—C21—H21118.00
C2—C1—H1B109.00C20—C21—H21118.00
C10—C1—H1A109.00C20—C22—H22119.00
C10—C1—H1B109.00C23—C22—H22119.00
H1A—C1—H1B108.00C22—C23—H23118.00
C1—C2—H2A109.00C24—C23—H23119.00
C1—C2—H2B109.00
C24—O5—C21—C20−1.4 (8)C11—C9—C10—C158.1 (3)
C21—O5—C24—O4179.1 (5)C11—C9—C10—C5179.4 (2)
C21—O5—C24—C23−0.3 (7)C11—C9—C10—C19−61.1 (3)
C10—C1—C2—C357.9 (3)C8—C9—C11—C1261.7 (3)
C2—C1—C10—C5−56.2 (3)C10—C9—C11—C12−169.8 (2)
C2—C1—C10—C965.5 (3)C1—C10—C19—O3−14.4 (4)
C2—C1—C10—C19−174.6 (2)C5—C10—C19—O3−132.5 (3)
C1—C2—C3—O167.1 (3)C9—C10—C19—O3107.6 (3)
C1—C2—C3—C4−54.0 (3)C9—C11—C12—C13−58.5 (3)
O1—C3—C4—C5−66.2 (3)C11—C12—C13—C1446.1 (3)
C2—C3—C4—C552.8 (3)C11—C12—C13—C17157.0 (2)
C3—C4—C5—O265.4 (3)C11—C12—C13—C18−76.8 (3)
C3—C4—C5—C6−177.9 (3)C12—C13—C14—C8−42.0 (4)
C3—C4—C5—C10−52.9 (3)C12—C13—C14—C15138.7 (3)
O2—C5—C6—C7−171.8 (3)C17—C13—C14—C8−160.3 (2)
C4—C5—C6—C770.3 (3)C17—C13—C14—C1520.4 (3)
C10—C5—C6—C7−54.4 (4)C18—C13—C14—C881.0 (3)
O2—C5—C10—C1−66.4 (3)C18—C13—C14—C15−98.3 (3)
O2—C5—C10—C9170.4 (2)C12—C13—C17—C16−148.9 (2)
O2—C5—C10—C1951.1 (3)C12—C13—C17—C2079.3 (3)
C4—C5—C10—C152.5 (3)C14—C13—C17—C16−31.8 (3)
C4—C5—C10—C9−70.7 (3)C14—C13—C17—C20−163.6 (2)
C4—C5—C10—C19169.9 (2)C18—C13—C17—C1685.7 (3)
C6—C5—C10—C1176.8 (3)C18—C13—C17—C20−46.1 (3)
C6—C5—C10—C953.6 (3)C8—C14—C15—C16−179.7 (3)
C6—C5—C10—C19−65.8 (3)C13—C14—C15—C16−0.4 (4)
C5—C6—C7—C853.6 (4)C14—C15—C16—C17−20.3 (4)
C6—C7—C8—C9−52.0 (4)C15—C16—C17—C1331.8 (3)
C6—C7—C8—C14−175.2 (3)C15—C16—C17—C20162.3 (3)
C7—C8—C9—C1052.9 (3)C13—C17—C20—C21−85.2 (4)
C7—C8—C9—C11−178.3 (3)C13—C17—C20—C2293.2 (4)
C14—C8—C9—C10178.1 (2)C16—C17—C20—C21149.9 (4)
C14—C8—C9—C11−53.1 (3)C16—C17—C20—C22−31.7 (5)
C7—C8—C14—C13169.8 (2)C17—C20—C21—O5−179.0 (4)
C7—C8—C14—C15−10.9 (4)C22—C20—C21—O52.4 (7)
C9—C8—C14—C1345.4 (3)C17—C20—C22—C23179.8 (4)
C9—C8—C14—C15−135.3 (3)C21—C20—C22—C23−1.8 (6)
C8—C9—C10—C1−174.6 (2)C20—C22—C23—C240.1 (7)
C8—C9—C10—C5−53.4 (3)C22—C23—C24—O4−178.4 (5)
C8—C9—C10—C1966.2 (3)C22—C23—C24—O50.9 (7)
D—H···AD—HH···AD···AD—H···A
O2—H2···O10.822.052.773 (3)147
O1—H1···O2i0.822.012.786 (3)158
C9—H9···O3ii0.982.583.545 (4)169
C15—H15···O4iii0.932.583.447 (4)155
C22—H22···O4iv0.932.603.233 (6)126
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
O2—H2⋯O10.822.052.773 (3)147
O1—H1⋯O2i0.822.012.786 (3)158
C9—H9⋯O3ii0.982.583.545 (4)169
C15—H15⋯O4iii0.932.583.447 (4)155
C22—H22⋯O4iv0.932.603.233 (6)126

Symmetry codes: (i) ; (ii) ; (iii) ; (iv) .

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Authors:  Hu-Yi Zhao; Fu-Kai Wu; Ying-Kun Qiu; Zhen Wu; Yong-Tao Jiang; Ji-Yong Chen
Journal:  J Asian Nat Prod Res       Date:  2010-09       Impact factor: 1.569

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

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Journal:  J Org Chem       Date:  1969-12       Impact factor: 4.354

4.  Hellebrigenin 3-haloacetates: potent site-directed alkylators of transport adenosinetriphosphatase.

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