Improved Process for Pilot-Scale Synthesis of Danshensu ((±)-DSS) and Its Enantiomer Derivatives
摘要:
A pilot-scale process has been developed for green and scalable synthesis of (+/-)-beta-(3,4-dihydroxyphenyl) lactic acid ((+/-)-DSS) and their two important derivatives, namely, (+/-)-IDHP [(+/-)-isopropyl 2-hydroxy-3-(3,4-dihydroxyphenyl)propanoate] and (+/-)-DBZ [(+/-)-bornyl 2-hydroxy-3-(3,4-dihydroxyphenyl)propanoate]. Subsequent hydrogenation has been carried out by employing Raney Ni as catalyst. The improved process results in higher yields of 47.5% for (+/-)-DBZ and 49.2% for (+/-)-IDHP compared to the initial process with a yield of 12% for (+/-)-DBZ and 18% for (+/-)-IDHP in our original medicinal chemistry route. Furthermore, kilograms of optical DBZ [(-)-S-DBZ and (+)-R-DBZ, >99% ee] and IDHP [(-)-S-IDHP and (+)-R-IDHP, >99% ee] have been produced by chiral high-performance liquid chromatography in good yield (>84%).
Improved Process for Pilot-Scale Synthesis of Danshensu ((±)-DSS) and Its Enantiomer Derivatives
摘要:
A pilot-scale process has been developed for green and scalable synthesis of (+/-)-beta-(3,4-dihydroxyphenyl) lactic acid ((+/-)-DSS) and their two important derivatives, namely, (+/-)-IDHP [(+/-)-isopropyl 2-hydroxy-3-(3,4-dihydroxyphenyl)propanoate] and (+/-)-DBZ [(+/-)-bornyl 2-hydroxy-3-(3,4-dihydroxyphenyl)propanoate]. Subsequent hydrogenation has been carried out by employing Raney Ni as catalyst. The improved process results in higher yields of 47.5% for (+/-)-DBZ and 49.2% for (+/-)-IDHP compared to the initial process with a yield of 12% for (+/-)-DBZ and 18% for (+/-)-IDHP in our original medicinal chemistry route. Furthermore, kilograms of optical DBZ [(-)-S-DBZ and (+)-R-DBZ, >99% ee] and IDHP [(-)-S-IDHP and (+)-R-IDHP, >99% ee] have been produced by chiral high-performance liquid chromatography in good yield (>84%).
本发明属化学制药领域,涉及中草药丹参中有效成分丹参素与H 2 S/NO供体的结合物及其制备方法和在制药中的应用,尤其是在制备防治心脑血管和炎症相关疾病药物中的用途。本发明通过体外氧化应激损伤和炎症模型实验,结果显示所述的结合物能显著抑制H 2 O 2 诱导的SH‑SY5Y细胞氧化应激损伤,对损伤细胞具有明显的保护作用;能显著抑制内毒素(LPS)诱导的小鼠腹腔巨噬细胞分泌炎性介质,减少炎症诱导的一氧化氮和炎性细胞因子的释放;体内活性实验结果显示,所述的结合物对LPS诱导的小鼠腹膜炎能改善小鼠的凝血时间,明显抑制小鼠腹腔的炎性细胞因子的释放,结果表明所述化合物可用于制备防治心脑血管疾病和炎症性疾病的药物。
A Modified Synthesis of (±)-β-Aryllactic acids
作者:Henry N. C. Wong、Zun Le Xu、Hson Mou Chang、Chi Ming Lee
DOI:10.1055/s-1992-26228
日期:——
The synthesis of racemic forms of the reportedly active principle of Danshen, namely (±)-ß-(3,4-dihydroxyphenyl)lactic acid [(±)- 3-(3,4-dihydroxyphenyl)-2-hydroxypropanoic acid] and its seven racemic derivatives is reported.
Enantiomerically pure α‐aminoacids are compounds of primary interest for the fine chemical, pharmaceutical, and agrochemical sectors. Aminoacid oxidases are used for resolving d,l‐aminoacids in biocatalysis. We recently demonstrated that l‐aminoacid deaminase from Proteus myxofaciens (PmaLAAD) shows peculiar features for biotechnological applications, such as a high production level as soluble
SUBSTITUTED BETA-PHENYL-ALPHA-HYDROXY-PROPANOIC ACID, SYNTHESIS METHOD AND USE THEREOF
申请人:Zheng Xiaohui
公开号:US20090131677A1
公开(公告)日:2009-05-21
The present invention relates to a compound of the formula (I), wherein R
1
, R
2
and R
3
are each independently selected from H, OH, F, Cl, Br, methoxy and ethoxy; or alternatively, R
1
and R
2
together form —OCH
2
O—, R
3
is selected from H, OH, methoxy, ethoxy and halogens; R
4
is OH or acyloxy; R
5
is cycloalkoxyl, amino and substituted amino, and when R
5
is selected from amino, at least one of R
1
, R
2
and R
3
is not H. The present invention further relates to a process for synthesizing a compound of the formula (I), and use of the compound of the formula (I) in the manufacture of a medicament for the prevention or treatment of cardiovascular or cerebrovascular diseases.
Substituted beta-phenyl-alpha-hydroxy propanoic acid, synthesis method and use thereof
申请人:Northwest University
公开号:EP2514739A1
公开(公告)日:2012-10-24
The present invention relates to a compound of the formula (I), wherein R1, R2 and R3 are each independently selected from H, OH, F, Cl, Br, methoxy and ethoxy; or alternatively, R1 and R2 together form -OCH2O-, R3 is selected from H, OH, methoxy, ethoxy and halogens; R4 is OH or acyloxy; R5 is cycloalkoxyl, amino and substituted amino, and when R5 is selected from amino, at least one of R1, R2 and R3 is not H. The present invention further relates to a process for synthesizing a compound of the formula (I), and use of the compound of the formula (I) in the manufacture of a medicament for the prevention or treatment of cardiovascular or cerebrovascular diseases.