作者:M. A. Mikhailov、P. A. Abramov、A. D. Mironova、M. R. Gallyamov、D. G. Sheven’、V. V. Pervukhin、M. N. Sokolov
DOI:10.1134/s1070328419010081
日期:2019.1
AbstractA new organometallic iodide cluster complex (Bu4N)2[W6I8(C≡C–C(O)OCH3)6] (I), analogous to the previously described (Bu4N)2[Mo6I8(C≡C–C(O)OCH3)6], was obtained by the reaction of (Bu4N)2[W6I14] with silver methyl propiolate AgC≡C–C(O)OCH3. The crystal structure was established for the tetraphenylphosphonium salt (Ph4P)2[W6I8(C≡C–C(O)OCH3)6] (II). According to X-ray diffraction (CIF file CCDC
摘要一种新的有机金属碘化物簇络合物(Bu 4 N)2 [W 6 I 8(C≡C–C(O)OCH 3)6 ](I),类似于先前描述的(Bu 4 N)2 [Mo 6 I (Bu 4 N)2 [W 6 I 14 ]与丙酸银甲酯AgC≡C–C(O)OCH 3反应,得到8(C≡C–C(O)OCH 3)6 ] 。四苯基phosph盐(Ph 4 P)2 [W的晶体结构确定。6 I 8(C≡C–C(O)OCH 3)6 ](II)。根据X射线衍射(CIF文件CCDC,编号1829205),II中的钨原子与丙炔酸甲酯配体的末端碳原子在W距离为2.220(12)-2.268(14)Å时发生配位。通过电喷雾质谱,1 H和13 C NMR光谱,元素分析和IR光谱对丙酸甲酯复合物进行表征。
Oligomerisation of alkynes at a pentamethylcyclopentadienylruthenium centre †
作者:Michael I. Bruce、Ben C. Hall、Brian W. Skelton、Allan H. White、Natasha N. Zaitseva
DOI:10.1039/b001981j
日期:——
RuCl(CCHPh)(PPh3)Cp* 2 and AgCCCO2Me gave Ruη1-C(CCPh) CHC(O)OMe-O}(PPh3)Cp* 3, while either LiCCPh or HCCPh/NaOMe afforded the known Ruη3-PhCHCHC CPh(CCPh)}(PPh3)Cp* 1. Similarly, RuClCCH(CO2Me)}(PPh3)Cp* 4 reacted with HCCPh/NaOMe to give Ruη3-CH(CO2Me)CHCCPh(CCCO2Me)}(PPh3)Cp* 5. Complex 3 reacted with HCCCO2R (R = Me or Et) to give the 1,3,4,5-tetraen-1-yls Ruη1,η2-C(CO2R)CHCPhCCCH(CO2Me)}(PPh3)Cp*
Lignan analogues, methods of preparation thereof and anti-hyperlipemic
申请人:Shionogi & Co., Ltd.
公开号:US05449814A1
公开(公告)日:1995-09-12
An anti-hyperlipemic agent which has a potent activity of reducing LDL and VLDL cholesterols, which are thought to be a risk factor for arteriosclerosis among total blood cholesterols, and which is excellent in the antioxidant activity on LDL, is provided. Additionally, a compound and a pharmaceutically acceptable salt thereof are disclosed, which is represented by Formula (I): ##STR1## [wherein R.sup.1 is a lower alkyl, cycloalkyl, cycloalkyl-lower alkyl, aryl or aralkyl group which is optionally substituted; R.sup.2 is a group represented by the formula: --COOR' (wherein R' is a lower alkyl or aralkyl which is optionally substituted), lower alkyl or halogenated lower alkyl; or R.sup.1 and R.sup.2, together with adjacent carbonyl group, form a cyclohexanone ring represented by the formula: ##STR2## R.sup.3 is a phenyl group optionally being substituted, and, ring A is a benzene nucleus which is optionally substituted, or a heterocyclic ring containing S or O optionally being substituted].