What makes xanthones from mangosteen so special?

What is amazing is that the Mangosteen (which, by the way, has no connection with the mango), has never been utilized for its multiple health benefits in North America or Europe despite its history and popularity as a folk remedy in Asia and South America. Until recently, it has been one of Nature's best kept secrets.

For centuries the traditional medical healers of India, China, Malaysia, Thailand the Philippines and Vietnam have employed Mangosteen for its health benefits. In the last 150 years the plant has been transported to Africa, the Caribbean, Australia and South America where both researchers and medical practitioners alike have studied and utilized its healing and protective properties.

What does the company mean by "whole fruit puree"?
The mangosteen fruit pulp is delicious and by itself holds some nutritional value, however, the pericarp and the seeds are the main source of a phtyonutrient known as xanothones. XanGo utilizes the whole fruit puree. We mill the entire fruit-pulp, seeds and pericarp-thus capturing the full abundance of nutritional support.

This is quintessential because, xanthones are quickly being recognized as the newest superstar of the phtyochemical world and XanGo's whole fruit process is the only dietary supplement to feature this powerful component!

Has there ever been any other commercial items featuring mangosteen?
Only as a flavor or pulp. As aforementioned, the mangosteen fruit pulp is delicious and there have been a few commercial items that have featured the mangosteen fruit pulp or flavor. Never before has a company brought to market the whole fruit goodness of the mangosteen—pericarp, pulp and seeds. XanGo is the first!

Those who have traveled to Asia may have come across Mangosteen flavored chewing gum by Lotte or mangosteen pulp in syrup sold under the name Twin Elephants. Also, here in the US, a drink sold under the brand name Zotics features mangosteen flavoring, but no actual mangosteen fruit.
Occasionally gift companies will ship frozen mangosteen in for use in exotic gift baskets. These companies charge a premium price for the fruit. It is rumored that the famous Harrods department store in England brought mangosteen in and charged the equivalent of several US dollars for each piece of fruit.