Diablo – find “Ascended” items for level 70 legendary crafting

In Diablo 3 Reaper of Souls I have gotten 2 new recipes for legendary level 70 items:

• Reaper's Wraps
• Pender's Purchase

I know there are more with the same properties that I describe in this question.

These two require a base item for crafting:

• Ascended Bracers
• Ascended Gauntlets

How do I obtain these items?

I looked through the crafting recipes I got and the closest I have are these:

• Sovereign Ascended Bracers
• Sovereign Ascended Gauntlets

But neither of these produced an item that fit those recipes, they created rare items that was named something else entirely. I thought perhaps that any item named "XXX Ascended Gauntlets" would fit the gauntlets, but then I haven't really been able to find or craft an item that is called that so I'm not entirely sure.

Since the crafting recipes for those Sovereign items require Death's Breath which I'd rather not waste, I'm asking here instead of just crafting X items to see if one of them might have the right name/requirements.

So what will fit those recipes? Do I have to start farming level 70 content for white items for this? Will they drop? Is there somewhere/somehow I can up the ante for this?

Edit: Scrolling to the bottom of the two webpages linked above for the Sovereign recipes, I can see that they are listed as materials for those recipes I ask about, yet when I crafted an item from each I got items named something else, and that apparently didn't fulfill the criteria for those recipes. Either I messed up (went blind?) or there could be a bug here?

I'll farm a few more Death's Breath and try again.