The hydrogenation of gossypol using supportednoblemetalcatalysts led to a new derivative named gossoxol in 5 to 69% yield. The most active and selective catalyst was 5 wt% Rh/C. The mechanism of the hydrogenation was discussed and plausible intermediates of the catalytic cycle were determined by tracking the behavior of gossypol in different solvents and at elevated temperature using 1H NMR spectroscopy
使用负载型贵金属催化剂对棉酚进行加氢,可生成新的名为棉酚的衍生物,产率为5%至69%。最具活性和选择性的催化剂是5 wt%Rh / C。讨论了氢化机理,并通过1 H NMR光谱跟踪棉酚在不同溶剂中和在高温下的行为,确定了催化循环的合理中间体。脱水棉酚的氢化也产生了棉酚,因此被认为是中间体。
Gossypol clathrates: Structure and thermal behavior of the gossypol acridine complex
作者:M. T. Khonkeldieva、S. A. Talipov、L. Yu. Izotova、Z. G. Tilyakov、B. T. Ibragimov、É. N. Kurtaliev
DOI:10.1134/s0022476611010264
日期:2011.2
The natural compound gossypol forms a stable clathrate with acridine. The composition of the clathrate is C30H30O8·0.5C13H9N. The unit cell is monoclinic, C2/c space group, a = 11.3213(3) Å, b = 30.5957(13) Å, c = 17.0824(4) Å, γ = 94.153(2)°, V = 5901.5(3) Å3, M = 1153.24, Z = 8, dx = 1.369 g/cm3, and R = 0.0413 for 4726 reflections. The structure of the clathrate allows one to refer this compound
A series of aromatic gossypol Schiff bases have been successfully synthesized via a feasible chemical modification. The antiviral activity against tobacco mosaic virus (TMV) of these gossypol Schiff bases has been tested for the first time. The bioassay studies indicated most of these derivatives exhibited excellent anti-TMV activity, in which o-trifluoromethylaniline Schiff base (19) displayed the best antiviral activities. Furthermore, compound 19 exhibited an eminent anti-TMV effect in the field and low toxicity to mice. These results suggest it is a promising candidate for the inhibitor of plant virus.
Structure of Gossypol.<sup>1</sup> XIV. Apogossypolic Acid
作者:Roger Adams、R. C. Morris、D. J. Butterbaugh、E. C. Kirkpatrick
DOI:10.1021/ja01276a048
日期:1938.9
Structure of Gossypol. IV.<sup>1,2</sup> Anhydrogossypol and its Derivatives