3is the β ‑pinene-derived
pyridyl carboxylic acid substituted quinoline oligoamide foldamer at
N-terminal. The computational results show that the free-energy
difference is 4.77 kcalmol-1 between P-3a and
M-3a . The R chirality of terminal atom still induces the P
helix and S chirality of terminal atom still induces the M
helix(Supporting information S6).