[EN] CYCLOHEXEN-1-YL-PYRIDIN-2-YL-1H-PYRAZOLE-4-CARBOXYLIC ACID DERIVATIVES AND THE USE THEREOF AS SOLUBLE GUANYLATE CYCLASE ACTIVATORS [FR] DÉRIVÉS DE L'ACIDE CYCLOHEXÉN-1-YL-PYRIDIN-2-YL-1H-PYRAZOLE-4-CARBOXYLIQUE ET UTILISATION DE CEUX-CI EN TANT QU'ACTIVATEURS DE LA GUANYLATE CYCLASE SOLUBLE
[2.2.2]- to [3.2.1]-Bicycle Skeletal Rearrangement Approach to the Gibberellin Family of Natural Products
作者:Brandon R. Smith、Jon T. Njardarson
DOI:10.1021/acs.orglett.8b01031
日期:2018.5.18
Synthetic studies toward the gibberellin family of natural products are reported. An oxidative dearomatization/Diels–Alder cascade assembles the carbon skeleton as a [2.2.2]-bicycle, which is then transformed to the [3.2.1]-bicyclic gibberellin core via a novel Lewis acid catalyzed rearrangement. Strategic synthetic handles allow for late-stage modification of the gibberellin skeleton and provides
DABO Boronates: Stable Heterocyclic Boronic Acid Complexes for Use in Suzuki-Miyaura Cross-Coupling Reactions
作者:Scott Rychnovsky、Maureen Reilly
DOI:10.1055/s-0030-1261218
日期:2011.10
Diethanolamine complexed heterocyclic boronicacids (DABO boronates) are air-stable reagents that can be used directly in Suzuki-Miyaura reactions in the presence of water or a protic co-solvent. Interestingly, heterocyclic DABO boronates can be stored for extended periods of time at room temperature with no noticeable degradation, unlike their boronicacid counterparts. Heterocyclic DABO boronates