<i>N</i>-Sulfonylaminyls. The Isolation of Dimers and Their Properties
作者:Yozo Miura、Yuji Nakamura、Masayoshi Kinoshita
DOI:10.1246/bcsj.54.3217
日期:1981.10
From the reaction mixtures of sulfonamides [3,5-(t-Bu)2C6H3NHSO2C6H4CH3-p and 3,5-(t-Bu)2C6H3NHSO2CH3] with di-t-butyl diperoxyoxalate, dimers of N-sulfonylaminyls were isolated as pure crystals which, in solution, dissociated into the corresponding N-sulfonylaminyls upon heating to 60 °C.
从磺酰胺 [3,5-(t-Bu)2C6H3NHSO2C6H4CH3-p 和 3,5-(t-Bu)2C6H3NHSO2CH3] 与二过氧草酸二叔丁酯的反应混合物中,分离出 N-磺胺基二聚体作为纯晶体,在溶液中,加热至 60 °C 后分解为相应的 N-磺酰氨基。
Mild Pd-Catalyzed <i>N</i>-Arylation of Methanesulfonamide and Related Nucleophiles: Avoiding Potentially Genotoxic Reagents and Byproducts
作者:Brandon R. Rosen、J. Craig Ruble、Thomas J. Beauchamp、Antonio Navarro
DOI:10.1021/ol200660s
日期:2011.5.20
A convenient, general, and high yielding Pd-catalyzed cross-coupling of methanesulfonamide with aryl bromides and chlorides Is reported. The use of this method eliminates concern over genotoxic impurities that can arise when an aniline is reacted with methanesulfonyl chloride. The application of this method to the synthesis of dofetilide is also reported.
MIURA, YOZO;OHNISHI, TETSUYA, J. ORG. CHEM., 53,(1988) N 13, 3012-3016
作者:MIURA, YOZO、OHNISHI, TETSUYA
DOI:——
日期:——
Glycopeptide Antibiotic Monomer Derivatives
申请人:Arimoto Hirokazu
公开号:US20080097078A1
公开(公告)日:2008-04-24
Novel glycopeptide antibiotic derivatives. These derivatives are represented by the formula (aglycon part of glycopeptide antibiotic derivative)-(Sac-NH)—R
A
[wherein (aglycon part of glycopeptide antibiotic derivative) is the part formed by removing the sugar part from a known glycopeptide antibiotic derivative; (Sac-NH) part is an amino sugar part or a sugar chain part containing an amino sugar; and R
A
represents, e.g., the formula —X
1
—Ar
1
—X
2
—Y—X
3
—Ar
2
(wherein X
1
, X
2
, and X
3
each represents 1) a single bond or 2) a heteroatom or heteroatom-containing group selected from the group consisting of —N═, ═N—, —NR
1
—, —O—, etc.; Y represents —NR
2
CO— or —CONR
2
— (wherein R
2
represents hydrogen or lower alkyl), etc.)]. These derivatives have antibacterial activity against vancomycin-resistant bacteria.