[EN] ISOMERIZATION OF ALKENES<br/>[FR] ISOMÉRISATION D'ALCÈNES
申请人:RWTH AACHEN
公开号:WO2020058505A1
公开(公告)日:2020-03-26
The present invention relates to an isomerization method for alkenes, comprising of reaction an alkene with a Ni(I)-compound. By this method, E-Alkenes are obtained in excellent yield.
Compounds of formula corresponding to either formula (Ia) or (Ib):
wherein:
M represents a molecule that can be used for the treatment or diagnosis of pathologies caused by attack on the cartilage,
R1, R2 and R3 represent an alkyl group, or R1, R2 and R3, together with the nitrogen atom carrying them, form a heterocycle,
X represents a (C1-C6)alkylene chain in which one or more —CH2— groups are optionally replaced by a sulphur atom, an oxygen atom, or an —NR—, —CO—, —CO—NH—, —CO2—, —SO— or —SO2— group,
n represents 0 or 1,
Hal represents a halogen atom,
or,
R4 represents an alkyl group,
Hal represents a halogen atom,
represents a molecule that can be used for the treatment or diagnosis of pathologies caused by attack on the cartilage, wherein the nitrogen atom may optionally be included in a saturated or unsaturated nitrogen-containing heterocyclic system, or included in a double bond; and pharmaceutical compositions thereof.
pH-Controlled Selective Protection of Polyaza Macrocycles
作者:Zoltan Kovacs、A. Dean Sherry
DOI:10.1055/s-1997-1418
日期:1997.7
Piperazine (1), tetraazacyclododecane 3 and pentaazacyclopentadecane 4 react with chloroformates in acid solution to give the selectively protected carbamate derivatives 1a, 3a-d, and 4a. The benzyloxycarbonyl derivatives 3d and 4a were alkylated with tert-butyl bromoacetate and removal of the benzyloxycarbonyl protection by catalytic hydrogenation afforded tert-butyl esters 5b and 6b in good yields.
Chiral Catalysts Dually Functionalized with Amino Acid and Zn<sup>2+</sup>Complex Components for Enantioselective Direct Aldol Reactions Inspired by Natural Aldolases: Design, Synthesis, Complexation Properties, Catalytic Activities, and Mechanistic Study
acetone and 2‐chlorobenzaldehyde and other aldehydes in the presence of catalytic amounts of the chiral Zn2+ complexes in acetone/H2O at 25 and 37 °C. Whereas ZnL3 yielded the aldol product in 43 % yield and 1 % ee (R), ZnL4 and ZnL5 afforded good chemical yields and high enantioselectivities of up to 89 % ee (R). UV titrations of proline and ZnL4 with acetylacetone (acac) in DMSO/H2O (1:2) indicate
[EN] HSP90-BINDING CONJUGATES AND FORMULATIONS THEREOF<br/>[FR] CONJUGUÉS LIÉS À HSP90 ET FORMULATIONS DE CEUX-CI
申请人:TARVEDA THERAPEUTICS INC
公开号:WO2020205948A1
公开(公告)日:2020-10-08
Conjugates of an active agent attached to a targeting moiety, such as at least one HSP90 binding moiety, via a linker, have been designed. Such conjugates can provide improved temporospatial delivery of the active agent, improved biodistribution and penetration in tumor, and/or decreased toxicity. Methods of making the conjugates and the formulations thereof are provided. Methods of administering the formulations to a subject in need thereof are provided, for example, to treat or prevent cancer.