[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.
Stereospecific Biosynthesis of β-Methyltryptophan from<scp>L</scp>-Tryptophan Features a Stereochemical Switch
作者:Yi Zou、Qi Fang、Haixing Yin、Zutao Liang、Dekun Kong、Linquan Bai、Zixin Deng、Shuangjun Lin
DOI:10.1002/anie.201306255
日期:2013.12.2
Make the switch: The three‐enzyme cassette MarG/H/I is responsible for stereospecificbiosynthesis of β‐methyltryptophan from L‐tryptophan (1). MarG/I convert 1 into (2S,3R)‐β‐methyltryptophan, while MarG/I combined with MarH convert 1 into (2S,3S)‐β‐methyltryptophan. MarH serves as a stereochemicalswitch by catalyzing the stereoinversion of the β‐stereocenter.
进行切换:三酶盒MarG / H / I负责L色氨酸的立体定向生物合成β-甲基色氨酸(1)。MarG / I将1转换为(2S,3R)-β-甲基色氨酸,而MarG / I与MarH结合将1转换为(2S,3S)-β-甲基色氨酸。MarH通过催化β-立体中心的立体反转而充当立体化学开关。
StnK2 catalysing a Pictet–Spengler reaction involved in the biosynthesis of the antitumor reagent streptonigrin
作者:Xiaozheng Wang、Dekun Kong、Tingting Huang、Zixin Deng、Shuangjun Lin
DOI:10.1039/c8ob02710b
日期:——
broad and potent antitumor activity. Previous isotope-labelling and genetic studies suggested that a β-carboline alkaloid should be a key intermediate of STN biosynthesis and formed via a Pictet–Spengler (PS) reaction. Herein, StnK2 was biochemically characterized to be a Pictet–Spenglerase (PSase) catalysing the formation of a tetrahydro-β-carboline (TH-βC) scaffold from (2S,3S)-β-methyl tryptophan and
The present invention provide a compound of the formula:
wherein X and X′ are the same or different and each represents a hydrogen atom, etc.; R
1
and R
2
are the same or different and each represents a hydrogen atom, etc.; R
3
represents a hydrocarbon group optionally having substituents, etc.; R
4
represents a hydrogen atom, etc.; Y and Ya are the same or different and each represents a bond or a spacer having a main chain of 1 to 8 atoms; 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 inhibitory activity and is useful for preventing and/or treating diseases associated with somatostatin.
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.