Mild, selective deprotection of thioacetates using sodium thiomethoxide
摘要:
A mild method for the deprotection of thioacetates is described. The reaction can be conveniently carried out at room temperature, and is compatible with a wide range of functionality. The procedure was shown to chemoselectively remove a thioacetate in the presence of an acetate, (C) 1998 Elsevier Science Ltd. All rights reserved.
The introduction of P4 substituted 1-methylcyclohexyl groups into Boceprevir®: A change in direction in the search for a second generation HCV NS3 protease inhibitor
作者:Frank Bennett、Yuhua Huang、Siska Hendrata、Raymond Lovey、Stephane L. Bogen、Weidong Pan、Zhuyan Guo、Andrew Prongay、Kevin X. Chen、Ashok Arasappan、Srikanth Venkatraman、Francisco Velazquez、Latha Nair、Mousumi Sannigrahi、Xiao Tong、John Pichardo、Kuo-Chi Cheng、Viyyoor M. Girijavallabhan、Anil K. Saksena、F. George Njoroge
DOI:10.1016/j.bmcl.2010.02.063
日期:2010.4
In the search for a second generation HCV protease inhibitor, molecular modeling studies of the X-ray crystal structure of Boceprevir (R) 1 bound to the NS3 protein suggest that expansion into the S4 pocket could provide additional hydrophobic Van der Waals interactions. Effective replacement of the P4 tertbutyl with a cyclohexylmethyl ligand led to inhibitor 2 with improved enzyme and replicon activities. Subsequent modeling and SAR studies led to the pyridine 38 and sulfone analogues 52 and 53 with vastly improved PK parameters in monkeys, forming a new foundation for further exploration. (C) 2010 Elsevier Ltd. All rights reserved.
Eloy,F.; Van Overstraeten,A., Chimica Therapeutica, 1969, vol. 4, p. 9 - 13
作者:Eloy,F.、Van Overstraeten,A.
DOI:——
日期:——
Reactions of 2,3-Dichloro- and 2,3,5-Trichloro-4,4-ethylenedioxy-2-cyclopentenones with Some O-, S-, and N-Nucleophiles
作者:R. R. Akhmetvaleev、G. A. Shavaleeva、N. A. Ivanova、M. S. Miftakhov
DOI:10.1023/b:rujo.0000010568.07788.3d
日期:2003.10
2,3-Dichloro- and 2,3,5 -trichloro-4,4-ethylenedioxy-2-cyclopentenones react with allyl and benzyl alcoholates and thiolates and benzylamine to give products resulting from Ad(N)E substitution of the 3-chlorine atom, [1,3]-sigmatropic rearrangement, and cleavage of the C-1-C-2 bond.
MARKUSHINA I. A.; GUBINA T. I.; MARINICHEVA G. E., TR. KRASNODAR. POLITEXN. IN-T, 1979, HO 97, 45-51
作者:MARKUSHINA I. A.、 GUBINA T. I.、 MARINICHEVA G. E.
DOI:——
日期:——
WANG, QINZHU;YANG, ZENGJIA, TSINXUA DASYUEH SYUEHBAO, 29,(1989) N, S. 78-84