PROCESSES FOR PREPARING JAK INHIBITORS AND RELATED INTERMEDIATE COMPOUNDS
申请人:Zhou Jiacheng
公开号:US20100190981A1
公开(公告)日:2010-07-29
The present invention is related to processes for preparing chiral substituted pyrazolyl pyrrolo[2,3-d]pyrimidines of Formula III, and related synthetic intermediate compounds. The chiral substituted pyrazolyl pyrrolo[2,3-d]pyrimidines are useful as inhibitors of the Janus Kinase family of protein tyrosine kinases (JAKs) for treatment of inflammatory diseases, myeloproliferative disorders, and other diseases.
[EN] PROCESS FOR PREPARING SUBSTITUTED PHENYLALKANES<br/>[FR] PROCÉDÉ POUR PRÉPARER DES PHÉNYLALCANES SUBSTITUÉS
申请人:MALLINCKRODT LLC
公开号:WO2016007823A1
公开(公告)日:2016-01-14
The invention provides methods for preparing substituted phenylalkanes. In particular, the processes comprise reacting a phenyl boronic compound with an α-β unsaturated carbonyl-containing compound via an asymmetric 1,4-addition reaction. The processes may be useful in the synthesis of tapentadol.
N-Tritylamino acids activated with DCC/HOBt, were coupled with various aminoacid derivatives without racemization. The tritylgroup was split off quantitatively in 10% CCl3COOH monohydrate or CH2ClCOOH in CH2Cl2. Under these conditions detritylation of N-Trt-Trp-Gly-NH2 proceeds without formation of an oxindole derivative and side alkylation products, even in the absence of a scavenger. Dipeptide
Dioxolane analogs for improved inter-cellular delivery
申请人:Shire BioChem Inc.
公开号:US20030013660A1
公开(公告)日:2003-01-16
Dioxolane analogs of the following formula:
1
wherein R1 and R2 are defined herein, are useful in the treatment of cancer. For example, the compounds can be used to treat patients with cancer in which the cancer cells are deficient in nucleoside or nucleoside base transporters.
Analytical strategies for the structural elucidation of proline‐containing dipeptides by liquid chromatography‐electrospray ionization‐tandem mass spectrometry
implementing liquidchromatography‐electrospray ionization‐tandemmassspectrometry (LC‐ESI‐MS/MS) techniques is a challenging task. The ESI‐MS/MS spectra of protonated molecules [M + H]+ display a single dominant product ion, representing the pyrrolidinyl ring (m/z 70.0652). This lack of ESI‐MS/MS information leads to unavoidable ambiguity in the structure of the dipeptide. We demonstrate how structural information