A Formal Synthesis of Lavendamycin Methyl Ester, Nitramarine, and Their Analogues: A Povarov Approach
作者:Subburethinam Ramesh、Rajagopal Nagarajan
DOI:10.1021/jo302389s
日期:2013.1.18
A convergent formal synthesis of lavendamycin methylester and synthesis of its analogues have been delineated through the Povarov approach. This protocol is also applied to the formal synthesis of nitramarine (3) in good yield.
A practicalsynthesis of (2R,3S)- and (2S,3R)-β-methyltryptophan ethyl ester (β-MeTrp-OEt) has been developed. Racemic threo-β-MeTrp-OEt was diastereoselectively prepared via crystallization-induced diastereomer transformation (CIDT) of the α-nitro equivalent of β-MeTrp-OEt. The enantiomers were resolved via diastereomeric salt formation using a half equivalent of (R)-2-(4-hydroxyphenoxy)propionic
Indole derivatives as somatostatin agonists or antagonists
申请人:Abe Hidenori
公开号:US20060223826A1
公开(公告)日:2006-10-05
The present invention provide a compound of the formula (I) wherein ring A represents an aromatic ring optionally having substituents; B, Y and Ya are the same or different and each represents a bond, etc.; R
1
and R
2
are the same or different and each represents a hydrogen atom, etc.; R
3
represents a hydrogen atom, etc.; R
4
and R
5
are the same or different and each represents a hydrogen, etc.; R
6
represents an indolyl group optionally having substituents; and Z and Za are the same or different and each represents a hydrogen atom, etc.; or a salt thereof or a prodrug thereof, having a somatostatin receptor binding inhibition activity and is useful for preventing and/or treating diseases associated with somatostatin.
[EN] AMINE COMPOUNDS<br/>[FR] DERIVES D'INDOLE SERVANT D'ANTAGONISTE DE SOMATOSTATINE
申请人:TAKEDA CHEMICAL INDUSTRIES LTD
公开号:WO2004046107A1
公开(公告)日:2004-06-03
The present invention provide a compound of the formula (I) wherein ring A represents an aromatic ring optionally having substituents; B, Y and Ya are the same or different and each represents a bond, etc.; R1 and R2 are the same or different and each represents a hydrogen atom, etc.; R3 represents a hydrogen atom, etc.; R4 and R5 are the same or different and each represents a hydrogen, etc.; R6 represents an indolyl group optionally having substituents; and Z and Za are the same or different and each represents a hydrogen atom, etc.; or a salt thereof or a prodrug thereof, having a somatostatin receptor binding inhibition activity and is useful for preventing and/or treating diseases associated with somatostatin.