Thio Analogs of Pyrimidine Bases: Synthesis, Spectroscopic Study, and In Silico Biological Activity Evaluation of New 2-o-(m- and p-)Chlorobenzylthio-6-Methyl-5-Piperidino-(Morpholino-)Methyluracils

Table 3

The HMBC correlations between protons and carbons of compounds 1–6.

Compound	Carbon atom	δC (ppm)	HMBC ^1H/^13C
1	C-2	167.69	S–CH2
	C-4	161.82	C5–CH2
	C-6	162.03	C6-CH3
2	C-2	167.70	S–CH2
	C-4	162.81	C5–CH2
	C-6	161.88	C6-CH3
3	C-2	168.05	S–CH2
	C-4	163.19	C5–CH2
	C-6	162.11	C6–CH3
4	C-2	163.98	S–CH2
	C-4	163.11	C5–CH2
	C-6	159.09	C6–CH3
5	C-2	163.68	S–CH2
	C-4	162.73	C5–CH2
	C-6	158.81	C6–CH3
6	C-2	163.83	S–CH2
	C-4	162.89	C5–CH2
	C-6	159.06	C6–CH3