The 2-(N-Formyl-N-methyl)aminoethyl Group as a Potential Phosphate/Thiophosphate Protecting Group in Solid-Phase Oligodeoxyribonucleotide Synthesis
摘要:
[GRAPHICS]The 2-(N-formyl-N-methyl)aminoethyl deoxyribonucleoside phosphoramidite 1 has been synthesized and used in the solid-phase synthesis of an octadecathymidylic acid as a cost-efficient monomer for potential application in the preparation of therapeutic oligonucleotides, The 2-(N-formyl-N-methyl)aminoethyl group can be cleaved from oligonucleotides according to a unique thermolytic cyclodeesterification process at pH 7.0. In addition to being cost-effective, the use of 1 simplifies oligonucleotide postsynthesis processing by eliminating the utilization of concentrated ammonium hydroxide in oligonucleotide deprotection.
Reactions on a Solid Surface. A Simple, Economical, and Efficient Acylation of Alcohols and Amines over Al<sub>2</sub>O<sub>3</sub>
作者:Veejendra K. Yadav、K. Ganesh Babu
DOI:10.1021/jo035412f
日期:2004.1.1
Al2O3 brings about a rapid acylation of a range of alcohols and amines with acid chlorides and acid anhydrides, respectively. Amines are easily Boc- and Cbz-protected on reaction with Boc-anhydride and Cbz-Cl, respectively. The acylation of phenols is slow enough to allow chemoselective acylation of alcohols and amines in the presence of phenols.
Al 2 O 3分别使多种醇和胺分别与酰氯和酸酐快速酰化。分别与Boc酸酐和Cbz-Cl反应时,胺很容易受到Boc和Cbz保护。酚的酰化足够慢,以允许在酚存在下醇和胺的化学选择性酰化。
Nucleosides. Part LXIII. Acetals as new 2?-O-protecting functions for the synthesis of oligoribonucleotides: Synthesis of uridine building blocks and evaluation of their relative acid stability
A broad variety of new acyclic vinyl ethers (see 6–41) have been synthesized via the vinyl-interchange reaction of ethyl vinyl ether at room temperature using mercury(II) trifluoroacetate as a highly efficient catalyst. The appropriate vinyl ethers were reacted under acidic conditions with 3′,5′-O-silyl-protected uridine 42 to the corresponding 2′-O-(1-alkoxyethyl) derivatives 43–83 which gave, on
[EN] IMIDAZOPYRIDAZINES AS MODULATORS OF IL-17<br/>[FR] IMIDAZOPYRIDAZINES EN TANT QUE MODULATEURS DE L'IL-17
申请人:JANSSEN BIOTECH INC
公开号:WO2021222404A1
公开(公告)日:2021-11-04
The present application discloses compounds having the following formula: (I), or pharmaceutically acceptable salts thereof, wherein R1, R2, R3, R4 and R5 are defined in the specification, as well as methods of making and using the compounds disclosed herein for treating or ameliorating an IL-17 mediated syndrome, disorder and/or disease.
The present invention relates to amino-substituted isothiazoles of general formula (I) : in which A, R1 and R2 are as defined in the claims, to methods of preparing said compounds, to intermediate compounds useful for preparing said compounds, to pharmaceutical compositions and combinations comprising said compounds and to the use of said compounds for manufacturing a pharmaceutical composition for the treatment or prophylaxis of a disease, in particular of neoplasms, as a sole agent or in combination with other active ingredients.