Table 3.

Antiviral alkaloids discussed here their structures and their sources

S.N	Alkaloid	Chemical structures	Source or origin	Ref.
1	Berberine		Natural	[19]
2	Homonojirimycin (HNJ)		Natural	[20]
3	Oxoglyantrypine		Natural	[21]
4	Norquinadoline A		Natural	[21]
5	Deoxynortryptoquivaline		Natural	[22]
6	Deoxytryptoquivaline		Natural	[22]
7	Tryptoquivaline		Natural	[22]
8	Compound-14		Synthetic	[23]
9	Yohimbine		Natural	[25]
10	Vincamine		Natural	[25]
11	Atropine		Natural	[25]
12	Trigonelline		Natural	[25]
13	Allantoin		Natural	[25]
14	Octopamine		Natural	[25]
15	Synephrine		Natural	[25]
16	Colchicine		Natural	[25]
17	Manzamine-A		Natural	[26]
18	Tetrandine		Natural	[27]
19	6-O-Butanoyl castanospermine		Synthetic	[28]
20	Tubingensin A		Natural	[31]
21	Cherylline		Natural	[37]
22	Castanospermine		Natural	[39]
23	Tomatidine		Natural	[40]
24	3-Oxo-voacangine		Natural	[41]
25	Voacangine-7-hydroxyindolenine		Natural	[41]
26	Rupicoline		Natural	[41]
27	Voacangine		Natural	[41]
28	Harringtonine		Natural	[16]
29	Piperine		Natural	[48]
30	Berberine chloride		Synthetic	[50]
31	Lycorine		Natural	[37]
32	Anisomycin		Natural	[38]
33	Emetine		Natural	[38]
34	Fusaindoterpene-B		Natural	[38]
35	JBIR-03		Natural	[58]
36	1,2-bis(1H-indol-3-yl) ethane-1,2- dione		Natural	[58]
37	Cephaeline		Natural	[47]
38	Ajmalicine		Natural	[66]
39	Chloroquine		Synthetic	[67]
40	Hydroxy-chloroquine		Synthetic	[67]
41	Pyronaridine		Synthetic	[67]
42	Homorringtonine		Natural	[72]
43	5,6-Dihydro-6-methoxynitidine		Synthetic	[75]
44	5-Methoxydictamine		Synthetic	[75]
45	Skimmianine		Natural	[75]
46	Sophaline B		Natural	[76]
47	Sophaline D		Natural	[76]
48	Sophaline F		Natural	[77]
49	Flavesine-J		Natural	[78]
50	Alopecurine-B		Natural	[78]
51	Dragmacidin-D		Natural	[81]
52	Fangchinoline		Natural	[82]
53	SIP-1		Natural	[83]
54	Manadomanzamine A		Natural	[86]
55	Manadomanzamine B		Natural	[86]
56	Xestomanzamine-A		Natural	[86]
57	Neokauluamine		Natural	[88, 89]
58	8-Hydroxymanzamine-A		Natural	[88, 89]
59	6-Deoxymanzamine-X		Natural	[88, 89]
60	12,28-oxamanamine-A		Natural	[88, 89]
61	Tulongicin-A		Natural	[90]
62	Dihydrospongotine-C		Natural	[90]
63	Michellamine D		Natural	[91]
64	Triptonine B		Natural	[92]
65	Michellamine F		Natural	[91]
66	Cepharanthine		Natural	[94]
67	Cyclopamine		Natural	[97]
68	A3E		Synthetic	[97]
69	Deoxynojirimycin		Natural	[101]
70	Jubanine G		Natural	[105]
71	Jubanine H		Natural	[105]
72	Nummularine B		Natural	[105]
73	n-Butyl deoxynojirimycin		Synthetic	[110]
74	(−)-12β-Hydroxyoxysophocarpine		Natural	[113]
75	(+)-12α-Hydroxysophocarpine		Natural	[113]
76	Aranotin		Natural	[114]
77	Gliotoxin		Natural	[115]
78	Homoharingtonin		Natural	[30]
79	Glaucine fumarate		Natural	[129]
80	N-Methyllaurotetanine		Natural	[129]
81	Isoboldine-HCl		Natural	[129]
82	Palmatine		Natural	[137]
83	Pericalline		Natural	[130]
84	Perivine		Natural	[130]
85	Periformyline		Natural	[130]
86	Leurocristine		Natural	[130]
87	Schizanthine Z		Natural	[70]
88	Thalimonine		Natural	[71]
89	Mefloquine		Synthetic	[67]
90	Capsaicin		Natural	[25]