(CH2) 5VDAVP] and four analogues of its L-arginine isomer d (CH2), VAVP with O-methyl-, O-ethyl-, O-isopropyl, and On-propyltyrosine substituents at position 2 were prepared by the solid-phase method using a slightly modified reoxidation procedure following deblocking with sodium in liquid ammonia to overcome losses due to insolubility. These analogues are the following: 1, d (CHJ,” yr (Me) VDAW, 2, d (CHJ, Tyr (Et) VDAVP; 3, d (CH&, Tyr (i-Pr) ...
