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. Author manuscript; available in PMC: 2024 Jun 7.
Published in final edited form as: J Am Chem Soc. 2023 May 22;145(22):12377–12385. doi: 10.1021/jacs.3c03587

Table 2. Screening of selected peptidyl ligand sequences.

graphic file with name nihms-1897686-t0002.jpg
entry [Rh] yielda (%) erb
1 Rh2(Boc-Asp-D-Pro-Acpc-Leu-OMe)4 56 71:29
2 Rh2(Boc-D-Asp-D-Pro-Acpc-Leu-OMe)4 30 53:47
3 Rh2(Boc-Asp-Pro-Acpc-Leu-OMe)4 27 53:47
4 Rh2(Boc-D-Asp-Pro-Acpc-Leu-OMe)4 35 48:52
5 Rh2(Boc-Asp-D-Pro-Aib-Leu-OMe)4 50 56:44
6 Rh2(Boc-Asp-D-Pro-Acpc-Ala-OMe)4 42 45:55
7 Rh2(Boc-Asp-D-Pro-Acpc-Ile-OMe)4 73 79:21
8 Rh2(Boc-Asp-D-Pro-Acpc-Chg-OMe)4 80 82:18
9 Rh2(Boc-Asp-D-Pro-Acpc-Chg-NMe2)4 (C1) 81 90:10
10 Rh2(Boc-Asp-D-Pro-Acpc-Chg-Pyrr)4 (C2) 73 90:10
11 Rh2(Piv-Asp-D-Pro-Acpc-Chg-NMe2)4 31 50:50
12 Rh2(MeOCO-Asp-D-Pro-Acpc-Chg-NMe2)4 28 54:64
13 Rh2(Boc-Glu-D-Pro-Acpc-Leu-OMe)4 40 42:58
graphic file with name nihms-1897686-t0003.jpg
a

Determined by 1H NMR in CDCl3 using trimethyl 1,3,5-benzenetricarboxylate as internal standard.

b

Determined by chiral HPLC.