以面包酵母的整个细胞为催化剂,通过脂肪族醛和2-酮羧酸的生物转化,产生了二十五个酰化甘油。首次合成了其中的六种酰基辅酶,并对其进行了初步鉴定。随后在温和的条件下与1,2-丙二胺发生化学反应,导致形成了十三种5,6-二氢吡嗪和六种四氢吡嗪。对它们的气味质量进行了评估,并估计了它们的气味阈值。在这些吡嗪衍生物中,2-乙基-3,5-二甲基-5,6-二氢吡嗪(烤,坚果,0.002 ng / L空气),2,3-二乙基-5-甲基-5,6-二氢吡嗪(烤,空气中的浓度为0.004 ng / L)和2-乙基-3,5-二甲基四氢吡嗪(面包类面包皮,空气中的浓度为1.9 ng / L)是气味最强烈的活性化合物。
The present invention relates to a new process for the generation of pyrazines consisting in the bioconversion of hydroxyketones with 1,2-diaminopropane. New tetrahydropyrazine derivatives as well as new dihydropyrazine derivatives with high flavour and low threshold properties are disclosed. Such pyrazines compounds exhibiting roasted and earthy aroma profiles may be used in the food and bevererage industry, especially chocolate, confectionery and coffee.
Prevention of ovarian cancer by administration of products that induce biologic effects in the ovarian epithelium
申请人:——
公开号:US20040176336A1
公开(公告)日:2004-09-09
The present invention relates to compositions and methods for preventing the development of epithelial ovarian cancer. Enhanced HRT and OCP regimens and formulations are also disclosed.
1,4-DIPHENYL-3-HYDROXYALKYL-2-AZETIDINONE DERIVATIVES FOR TREATING HYPERCHOLESTROLEMIA
申请人:Microbia Inc.
公开号:EP1879860A2
公开(公告)日:2008-01-23
[EN] BIPHENYLAZETIDINONE CHOLESTEROL ABSORPTION INHIBITORS<br/>[FR] INHIBITEURS D'ABSORPTION DE BIPHENYLAZETIDINONE CHOLESTEROL
申请人:MICROBIA INC
公开号:WO2006121861A2
公开(公告)日:2006-11-16
[EN] The invention relates to a chemical genus of 4-biphenyl-1-phenylazetidin-2-ones useful in the treatment of hypercholesterolemia and other disorders. The compounds have the general formula (I). Pharmaceutical compositions and methods for treating cholesterol- and lipid-associated diseases are also disclosed. [FR] Famille chimique de 4-biphényle-1-phénylazétidine-2-ones utiles pour le traitement de l'hypercholesterolémie et d'autres troubles. Les composés décrits sont de formule (I). Compositions pharmaceutiques et procédés pour le traitement de maladies liées au cholestérol et aux lipides.