Synthesis and stereochemical analysis of 2-amino-1,2,3,4-tetrahydro-1,4-methanonaphthalene-2-carboxylic acid, a conformationally rigid phenylalanine derivative
作者:W. John Layton、Stanford L. Smith、Peter A. Crooks、Trevor Deeks、Roger D. Waigh
DOI:10.1039/p19840001283
日期:——
,2,3,4-tetrahydro-1,4-methanonaphthalene (6) by treatment with 70% sulphuric acid. N-Debenzylation of (6) by hydrogenolysis with 5% palladium-on-charcoal catalyst afforded 2-amino-2-carboxamido-1,2,3,4-tetrahydro-1,4-methanonaphthalene (7) which gave the acid (3) on heating in 10% sulphuric acid. A Stereochemical analysis of (3) by 1H n.m.r., 13C n.m.r, and auto-correlated two-dimensional n.m.r. spectroscopy
通过与1的Strecker反应得到的唯一氨基酸产物,获得了立体化学未知的刚性苯丙氨酸类似物2-氨基-1,2,3,4-四氢-1,4-甲基萘-2-羧酸(3)。 2,3,4-四氢-1,4-甲基萘-2--2-(4)。化合物(4)首先用苄胺和氰化钾处理,得到2-苄基氨基-2-氰基-1,2,3,4-四氢-1,4-甲基萘(5),然后将其转化为2-苄基氨基-通过用70%的硫酸处理来处理2-羧酰胺基-1,2,3,4-四氢-1,4-甲基萘(6)。(6的N-脱苄基作用)于5%的钯炭催化剂上进行氢解,得到2-氨基-2-甲酰胺基1,2,3,3,4-四氢-1,4-甲基萘(7),将其在10中加热时得到酸(3) % 硫酸。的(A立体化学分析3通过)1个H NMR,13 C NMR,和自相关的二维NMR光谱,所确定的结构是2-内-氨基-1,2,3,4-四氢-1,4-亚-methanonaphthalene -2-外型-羧酸(1A)。1