Chiral Cyclopentadienyl Ligands Enable a Rhodium(III)-Catalyzed Enantioselective Access to Hydroxychromanes and Phthalides
摘要:
The demand for efficient chiral cyclopentadienyl ligands (Cp-x) has increased significantly in recent years, partly because Cp*Rh(III) species have been developed as powerful catalysts for directed C-H functionalization reactions. However, a lack of suitable Cp-x ligands has hampered the development of the corresponding enantioselective processes. We report expansions of the libraries of two generations of Cp-x ligands and their corresponding rhodium(I) complexes. The potential of the rhodium complexes as catalysts was evaluated in enantioselective C-H functionalizations involving cyclizations across tethered aldehydes. The mild reaction conditions permit the syntheses of hydroxychromanes and phthalides in good yields and high enantioselectivities.
Rhodium(III)-Catalyzed Intramolecular Hydroarylation, Amidoarylation, and Heck-type Reaction: Three Distinct Pathways Determined by an Amide Directing Group
作者:Tyler A. Davis、Todd K. Hyster、Tomislav Rovis
DOI:10.1002/anie.201307631
日期:2013.12.23
reaction pathways of a wide variety of tethered alkenes can be accessed through changing the amide directing group. This provides an efficient route to a myriad of complex polycyclic products, many containing newly formed all‐carbonquaternary centers. Amidoarylations can diastereoselectively deliver products with up to three contiguous stereocenters.
[EN] MACROCYCLIC LACTAMS AND PHARMACEUTICAL USE THEREOF<br/>[FR] LACTAMES MACROCYCLIQUES ET LEUR UTILISATION PHARMACEUTIQUE
申请人:NOVARTIS AG
公开号:WO2005049585A1
公开(公告)日:2005-06-02
The present invention relates to novel macrocyclic compounds of the formula (I) wherein R1, R2, R3, U, V, W, X, Y, Z and n are as defined in the specification, the number of ring atoms included in the macrocyclic ring being 14, 15, 16 or 17, in free base form or in acid addition salt form, to their preparation, to their use as pharmaceuticals and to pharmaceutical compositions comprising them.
Macrocyclic lactams and pharmaceutical use thereof
申请人:Auberson Yves
公开号:US20070072792A1
公开(公告)日:2007-03-29
The present invention relates to novel macrocyclic compounds of the formula
wherein R
1
, R
2
, R
3
, U, V, W, X, Y, Z and n are as defined in the specification, the number of ring atoms included in the macrocyclic ring being 14, 15, 16 or 17, in free base form or in acid addition salt form, to their preparation, to their use as pharmaceuticals and to pharmaceutical compositions comprising them.
Macrocyclic Lactams and Pharmaceutical Use Thereof
申请人:AUBERSON Yves
公开号:US20100022500A1
公开(公告)日:2010-01-28
The present invention relates to novel macrocyclic compounds of the formula
wherein R
1
, R
2
, R
3
, U, V, W, X, Y, Z and n are as defined in the specification, the number of ring atoms included in the macrocyclic ring being 14, 15, 16 or 17, in free base form or in acid addition salt form, to their preparation, to their use as pharmaceuticals and to pharmaceutical compositions comprising them.
ALLYLOXY AND ALKYLOXY BENZOIC ACID DELIVERY AGENTS
申请人:Song Jianfeng
公开号:US20100105604A1
公开(公告)日:2010-04-29
The present invention relates to pharmaceutical compounds for delivering active agents, such as biologically or chemically active agents, to a target. The invention also relates to pharmaceutical compositions comprising at least one delivery agent compound of the present invention and at least one active agent, and unit dosage forms comprising such compositions. Methods for the preparation and administration of the pharmaceutical compositions are also disclosed.