Syntheses of Quinazoline-2,4-dione Alkaloids and Analogues from Mexican Zanthoxylum Species †
作者:I. Rivero、K. Espinoza、R. Somanathan
DOI:10.3390/90700609
日期:——
Quinazolinone and quinazolinedione derivatives are of considerable interest due to their wide array of pharmacological properties. In this paper we report the synthesis of ten quinazolinediones. The previous isolation of two of these compounds, namely 1-methyl-3-(2'-phenylethyl)-1H,3H-quinazoline-2,4-dione and 1-methyl-3-[2'-(4'- methoxyphenyl)ethyl]-lH,3H-quinazoline-2,4-dione, from the seed husks of Mexican Zanthoxylum species has been reported
Isatoicanhydride (1) can be attached to Merrifield resin by alkylation on its nitrogen. A maximum loading of 3.2 mmol of anhydride/g of 5 was achieved. This resin, due to the highly reactive anhydride moiety, completely removes primary and secondary aliphatic amines from reactions where they are used in excess.
Abstract Two new 4-quinazolone alkaloids have been isolated from seed husks of Zanthoxylum arborescens . Based on their spectroscopic properties they have been assigned structures, 1-methyl-3-(2′-phenylethyl)-1H,3H-quinazoline-2,4-dione and 1-methyl-3-[2′-(4″-methoxyphenyl)ethyl]-1H,3H-quinazoline-2,4-dione. These structural assignments have been confirmed by synthesis. Skimmianine has been obtained
摘要 从花椒籽壳中分离得到两种新的4-喹唑酮类生物碱。根据它们的光谱特性,它们被指定为结构 1-methyl-3-(2'-phenylethyl)-1H,3H-quinazoline-2,4-dione 和 1-methyl-3-[2'-(4″-甲氧基苯基)乙基]-1H,3H-喹唑啉-2,4-二酮。这些结构分配已通过合成得到证实。Skimmianine 已从 Z. dimoncillo 和 Z. caribaeum 的叶提取物中获得,而skimmianine 和 scopeletin 已从 Z. fagara 的叶提取物中分离出来。
Compounds that enhance Atoh-1 expression
申请人:MASSACHUSETTS EYE & EAR INFIRMARY
公开号:EP2732819A2
公开(公告)日:2014-05-21
This invention generally provides compounds, pharmaceutical compositions, and methods for their use, which include methods that result in increased expression in an Atoh1 gene (e.g., Hath1) in a biological cell. More specifically, the invention relates to the treatment of diseases and/or disorders that would benefit from increased Atoh1 expression, e.g. a hearing impairment or imbalance disorder associated with a loss of auditory hair cells, or a disorder associated with abnormal cellular proliferation.
This invention generally provides compounds, pharmaceutical compositions, and methods for their use, which include methods that result in increased expression in an Atoh1 gene (e.g., Hath1) in a biological cell. More specifically, the invention relates to the treatment of diseases and/or disorders that would benefit from increased Atoh1 expression, e.g., a hearing impairment or imbalance disorder associated with a loss of auditory hair cells, or a disorder associated with abnormal cellular proliferation.