N-Cbz-Gly-Pro-Gly-Gly-Pro-Ala-

Modulation of G Proteins in Rat Striatum by Neuroleptic Drugs and a Peptidomimetic Analog of Pro-Leu-Gly-NH2

Although the dopamine hypothesis of schizophrenia has gained wide acceptance, it has recently become clear that it requires revision (Seeman and Niznik, 1990 ; Ellison, 1994 ; Kahn and Davis, 1995 ). The original hypothesis asserts

环肽的合成方法

。1.1.1对硝基酚酯法：对硝基酚酯法合成环肽的通式如Scheme 1Cyclo（b-Ala-Phe-Pro）的合成中应用了对硝基酚酯法。Boc-b-Ala-Phe-Pro-OH在乙酸乙酯中与1.5摩尔量对硝基酚混合，DCC为缩合剂，得到Boc-b-Ala-Phe-Pro-ONp，经TFA脱去Boc，以0.1M NaHCO3和0.1M Na2CO3为碱，二氧六环为溶剂，室温反应，得到收率为32% 的环三肽。对硝基酚酯法的优点在于对硝基酚价廉易得，缺点是过量的对硝基酚不易完全除去，产物不易纯化，颜色发黄

常用核酸和氨基酸代码

Thr T ACA Thr T ACG Thr T AAU Asn N AAC Asn N AAA Lys K AAG Lys K AGU Ser S AGC Ser S AGA Arg R AGG Arg R G GUU Val V GUC Val V GUA Val V GUG Val V GCU ALA A GCC ALA A GCA ALA A GCG ALA A GAU Asp D GAC Asp D GAA Glu E GAG Glu E GGU Gly G GGC Gly G GGA