Novel process for producing thiolsulfonic acid derivatives
摘要:
这项发明涉及一种生产一般式为:##STR1##的巯基磺酸衍生物的方法,其中R.sub.1和R.sub.2中的每一个独立地是较低的烷基基团或5-或6-成员环烷基基团,或者R.sub.1和R.sub.2与相邻的氮原子一起形成一个可能进一步含有氧、硫或氮原子的5-或6-成员杂环基团;而R.sub.3是(1)一种芳基基团,可以选择地被较低的烷基基团、卤素、较低的烷氧基团或较低的烷硫基团取代,(2)一种可能被较低的烷氧基团取代的较低的烷基基团,(3)一种芳基烷基基团或(4)一种环烷基基团,或其盐,包括将一般式为:##STR2##的化合物,其中R.sub.1和R.sub.2如上所定义,或其盐与一般式为:R.sub.3 SO.sub.2 H (II)的化合物反应,其中R.sub.3如上所定义,或其盐在酸性条件下。根据本发明的方法,化合物(I)或其盐可以高纯度、高产率地制备。
作者:Hikoichi Hagiwara、Mitsuo Numata、Kazuo Konishi、Yoshikazu Oka
DOI:10.1248/cpb.13.253
日期:——
Nereistoxin (I) was synthesized from 1, 3-bis(benzylthio)-2-propanol (III) via the intermediates (VI), (XIII), and (XV). The structures of some synthetic isomers were also discussed.
Synthesis of Nereistoxin and Related Compounds. II
作者:MITSUO NUMATA、HIKOICHI HAGIWARA
DOI:10.1248/cpb.16.311
日期:——
An improved synthesis of nereistoxin (VII or XIII ; R3=CH3) was achieved via the intermediates VIII (R3=CH3), X (R3=CH3) and XII (R3=CH3) as summarized in Chart 2. Applying the reactions formulated in Chart 1 and Chart 2, a number of amines were prepared, whereby the occurrence of intermediates, cyclic sulfonium (III) in the amination reaction in Chart 1 and cyclic immonium (IX) in the thiolation reaction in Chart 2 respectively, was suggested.