Table 1.

¹H (500 MHz) and ¹³C (125 MHz) NMR data of compound 1 (CD₃OD, δ: ppm).

No.	δC (type)	δH (mult., J in Hz)	No.	δC (type)	δH (mult., J in Hz)
	δ-Cl-DHPA1			N-Me-Ile4
CO	170.4, C		CO	172.1, C
α	70.7, CH	5.21, t (7.0)	α	56.9, CH	5.09, d (11.0)
β	34.9, CH2	2.18, m	β	33.4, CH	2.06, m
γ	67.2, CH	3.82, m	β-Me	14.8, CH3	0.90, overlapped
δ	48.3, CH2	3.61, d (5.0)	γ	25.3, CH2	1.50, m; 1.07, m
	β-Me-Pro2		δ	10.0, CH3	0.94, overlapped
CO	172.4, C		N-Me	30.1, CH3	3.21, s
α	67.5, CH	4.08, m		N-Me-Ala5
β	37.5, CH	2.55, m	CO	170.8, C
γ	30.6, CH2	2.10, m; 1.77, br s	α	55.4, CH	5.32, q (6.5)
δ	45.4, CH2	4.06, m; 3.95, m	β	14.3, CH3	1.32, overlapped
β-Me	17.9, CH3	1.16, d (6.8)	N-Me	27.5, CH3	2.71, s
	Ile3			β-Ala6
CO	173.6, C		CO	173.6, C
α	53.4, CH	4.76, overlapped	α	33.8, CH2	2.69, m; 2.58, m
β	37.0, CH	1.94, m	β	33.4, CH2	3.80, m; 3.15, m
β-Me	14.3, CH3	0.86, overlapped	NH		8.56, br. s
γ	24.6, CH2	1.49, m;1.33, overlapped
δ	9.7, CH3	0.87, overlapped
NH		7.03, d (7.8)