Where do organic compounds come from?

Organic compounds are compounds whos molecules have carbon in them, I know these can be manmade, but they should be found in nature too.

If anyone knows where or how these compounds occur in nature, please tell me:

Triethanolamine
&
Isopentane

found on http://www.cem.msu.edu/~reusch/VirtualText/lipids.htm

"Compounds classified as terpenes constitute what is arguably the largest and most diverse class of natural products. A majority of these compounds are found only in plants, but some of the larger and more complex terpenes ( e.g. squalene & lanosterol ) occur in animals. Terpenes incorporating most of the common functional groups are known, so this does not provide a useful means of classification. Instead, the number and structural organization of carbons is a definitive characteristic. Terpenes may be considered to be made up of isoprene ( more accurately isopentane ) units, an empirical feature known as the isoprene rule. Because of this, terpenes usually have 5n carbon atoms ( n is an integer ) "