Synthetic approach to (+)-aldosterone and its relatives. 1. Synthesis of (+)-trans-4,5-(4-methoxybenzo)-1.beta.,7a.beta.-[2.alpha.-(methoxymethyl)-5-oxofuro]hydrindan
A synthesis in the series of aconitine and delphinine
作者:K. Wiesner、Wen-ling Kao、J. Šantroch
DOI:10.1139/v69-397
日期:1969.7.1
The synthesis of compound 3 is described. This synthesis represents the solution of most of the problems which will be encountered in the approach to the delphinine and aconitine aromatization products 1 and 2. The synthetic compound 3 incorporates the complete skeleton and functionality of 1 and 2 except the substitution of ring A.
SUBSTITUTED THIOPHENYL URACILS, SALTS THEREOF AND THE USE THEREOF AS HERBICIDAL AGENTS
申请人:Syngenta Crop Protection AG
公开号:US20210087151A1
公开(公告)日:2021-03-25
The invention relates to substituted thiophenyl uracils of general formula (I) or salts (I) thereof, wherein the groups in general formula (I) are as defined in the description, and to the use thereof as herbicides, in particular for controlling weeds and/or weed grasses in crops of cultivated plants and/or as plant growth regulators for influencing the growth of crops of cultivated plants.
[EN] PIPERIDINE-DIONE DERIVATIVES<br/>[FR] DÉRIVÉS DE PIPÉRIDINE-DIONE
申请人:HOFFMANN LA ROCHE
公开号:WO2015140133A1
公开(公告)日:2015-09-24
The invention provides novel compounds having the general formula (I) and tautomers and pharmaceutically acceptable salts thereof, wherein A1, A2, A3, A4, R1, R4, R5, R6, R7 and R8 are as defined herein, compositions including the compounds and methods of using the compounds.
Copper-Catalyzed Aerobic CC Bond Cleavage of Lactols with N-Hydroxy Phthalimide for Synthesis of Lactones
作者:Ya Lin Tnay、Shunsuke Chiba
DOI:10.1002/asia.201403196
日期:2015.4
The transformation of cyclichemiacetals (lactols) into lactones has been achieved by Cu‐catalyzed aerobic CC bond cleavage in the presence of N‐hydroxy phthalimide (NHPI). The present process is composed of a multistep sequence including a) formation of exo‐cyclic enol ethers by dehydration; b) addition of phthalimide N‐oxyl radical to the enol ethers followed by trapping of the resulting C‐radicals
Substituted thiophenyl uracils, salts thereof and the use thereof as herbicidal agents
申请人:Syngenta Crop Protection AG
公开号:US11274083B2
公开(公告)日:2022-03-15
The invention relates to substituted thiophenyl uracils of general formula (I) or salts (I) thereof, wherein the groups in general formula (I) are as defined in the description, and to the use thereof as herbicides, in particular for controlling weeds and/or weed grasses in crops of cultivated plants and/or as plant growth regulators for influencing the growth of crops of cultivated plants.